Luigi Mangione#Perp walk

Luigi Nicholas Mangione was born in Towson, Maryland,{{Cite web |last1=Smith |first1=Justin |last2=Fenton |first2=Brenna |date=December 9, 2024 |title=Luigi Mangione's sprawling family found success after patriarch's rise |url=https://www.thebaltimorebanner.com/community/criminal-justice/luigi-mangione-family-baltimore-towson-GPRMNCATXRGDJAUZXJQO6RHSHU/ |access-date=December 13, 2024 |website=The Baltimore Banner |language=en |archive-date=December 15, 2024 |archive-url=https://web.archive.org/web/20241215190509/https://www.thebaltimorebanner.com/community/criminal-justice/luigi-mangione-family-baltimore-towson-GPRMNCATXRGDJAUZXJQO6RHSHU/ |url-status=live}} on May 6, 1998, to Kathleen ({{nee|Zannino}}) and Louis Mangione, a Baltimore-area couple of Italian descent.{{Cite web |last1=Parker |first1=Jessica |last2=Pigliucci |first2=Cai |date=December 14, 2024 |title=Luigi Mangione: Tracing the privileged Baltimore family roots of suspected CEO killer |url=https://www.bbc.com/news/articles/crl3jkjxp75o |url-status=live |archive-url=https://web.archive.org/web/20241215165253/https://www.bbc.com/news/articles/crl3jkjxp75o |archive-date=December 15, 2024 |access-date=December 15, 2024 |website=BBC News |language=en-GB}} He has two older sisters. His paternal grandfather, Nicholas Mangione, was a successful Baltimore businessman with 10 children (five sons and five daughters) and 37 grandchildren;{{Cite web |last=Shoaib |first=Alia |date=December 12, 2024 |title=Who Is Luigi Mangione's Father? Louis Mangione Is Wealthy Country Club Owner |url=https://www.newsweek.com/luigi-mangione-louis-father-wealthy-1999684 |url-status=live |archive-url=https://web.archive.org/web/20241226022718/https://www.newsweek.com/luigi-mangione-louis-father-wealthy-1999684 |archive-date=December 26, 2024 |access-date=December 26, 2024 |website=Newsweek}} one of his grandchildren is Nino Mangione, a Maryland House of Delegates member.{{Cite web |last=Qin |first=Amy |date=December 11, 2024 |title=The Prominent Maryland Family of the Suspect in the C.E.O. Killing |url=https://www.nytimes.com/2024/12/10/us/mangione-family-shooting-suspect.html |url-status=live |archive-url=https://web.archive.org/web/20241222154713/https://www.nytimes.com/2024/12/10/us/mangione-family-shooting-suspect.html |archive-date=December 22, 2024 |access-date=December 26, 2024 |website=The New York Times}}

Mangione attended Gilman School, an all-boys private secondary school in Baltimore, where he participated in sports such as soccer, track, cross country, and wrestling.{{cite web |last1=Kilgannon |first1=Corey |last2=Baker |first2=Mike |last3=Broadwater |first3=Luke |last4=Hubler |first4=Shawn |title=Suspect in C.E.O. Killing Withdrew From a Life of Privilege and Promise |url=https://www.nytimes.com/2024/12/09/nyregion/united-healthcare-ceo-shooting-luigi-mangione.html |website=The New York Times |access-date=25 April 2025 |date=10 December 2024}} He developed an interest in video games and video game development, teaching himself how to code{{Cite news |last=Kilgannon |first=Corey |date=2024-12-09 |title=Luigi Mangione, Suspect in C.E.O.'s Killing, Attended Elite Institutions |url=https://www.nytimes.com/2024/12/09/nyregion/who-is-luigi-mangione.html |access-date=2025-04-26 |work=The New York Times |language=en-US |issn=0362-4331}} and co-founding a gaming app development company.{{Cite web |last1=Bauerlein |first1=Valerie |last2=Chaffin |first2=Joshua |last3=Carlton |first3=Jim |title=Luigi Mangione's Dark Descent From Promising Student to Murder Suspect |url=https://www.wsj.com/us-news/luigi-mangione-what-happened-to-accused-uhc-shooter-5d1e570d |access-date=2025-04-26 |website=WSJ |language=en-US}}{{Cite magazine |last=Popli |first=Nik |date=2024-12-10 |title=Luigi Mangione: What We Know About Arrest in UHC CEO Killing |url=https://time.com/7200981/luigi-mangione-uhc-ceo-killing/ |access-date=2025-04-26 |magazine=TIME |language=en}} Mangione graduated as the valedictorian of his class in 2016, and his valedictorian speech focused on the impact of artificial intelligence and technology on society.{{Cite web |last=Kilgannon |first=Corey |date=December 9, 2024 |title=Luigi Mangione, Suspect in C.E.O.'s Killing, Attended Elite Institutions |url=https://www.nytimes.com/2024/12/09/nyregion/who-is-luigi-mangione.html |url-access=subscription |url-status=live |archive-url=https://archive.today/20241210015246/https://www.nytimes.com/2024/12/09/nyregion/who-is-luigi-mangione.html |archive-date=December 10, 2024 |access-date=December 12, 2024 |website=The New York Times}}

Mangione attended the University of Pennsylvania, where he graduated cum laude in 2020 with a Bachelor of Science in Engineering (BSE) in computer engineering and a Master of Science in Engineering (MSE) in computer and information science.{{Cite news |date=December 9, 2024 |first1=Michael |last1=Loria |first2=Chris |last2=Kenning |title='Shocked and devastated': Family of suspected United Healthcare killer speaks out |url=https://eu.usatoday.com/story/news/nation/2024/12/09/family-of-suspected-ceo-killer-speaks-out/76875436007/ |access-date=December 15, 2024 |work=USA Today |archive-date=December 10, 2024 |archive-url=https://web.archive.org/web/20241210080307/https://eu.usatoday.com/story/news/nation/2024/12/09/family-of-suspected-ceo-killer-speaks-out/76875436007/ |url-status=live}}{{Cite web |last=Mather |first=Katie |date=December 10, 2024 |title=What we know about Luigi Mangione, 26-year-old charged with murder in UnitedHealthcare CEO's killing |url=https://www.yahoo.com/news/what-we-know-about-luigi-mangione-26-year-old-charged-with-murder-in-unitedhealthcare-ceos-killing-224033772.html |access-date=December 11, 2024 |website=Yahoo News |archive-date=December 14, 2024 |archive-url=https://web.archive.org/web/20241214052546/https://www.yahoo.com/news/what-we-know-about-luigi-mangione-26-year-old-charged-with-murder-in-unitedhealthcare-ceos-killing-224033772.html |url-status=live}} His undergraduate studies included a minor in mathematics, and his graduate curriculum concentrated on artificial intelligence.{{cite web |last1=Binday |first1=Ben |last2=Bartlett |first2=Katie |title=Here's what we know about the Penn graduate charged with murder of healthcare CEO |url=https://www.thedp.com/article/2024/12/penn-united-healthcare-shooting-luigi-mangione-charged |website=The Daily Pennsylvanian |type=student newspaper |access-date=December 12, 2024 |date=December 10, 2024 |archive-date=January 2, 2025 |archive-url=https://web.archive.org/web/20250102003113/https://www.thedp.com/article/2024/12/penn-united-healthcare-shooting-luigi-mangione-charged |url-status=live}} While an undergraduate student, Mangione completed a robotics research internship at the Whiting School of Engineering at Johns Hopkins University and was a UI programming intern with Firaxis Games between May 2016 and August 2017,{{Cite web |last=Makuch |first=Eddie |date=December 10, 2024 |title=Alleged UHC Shooter Once Interned At Civ Studio |url=https://www.gamespot.com/articles/alleged-uhc-shooter-once-interned-at-civ-studio/1100-6528337/ |url-status=live |archive-url=https://web.archive.org/web/20241213204157/https://www.gamespot.com/articles/alleged-uhc-shooter-once-interned-at-civ-studio/1100-6528337/ |archive-date=December 13, 2024 |access-date=December 17, 2024 |website=GameSpot}} where he worked on the video game Civilization VI.{{Cite web |last=Clark |first=Sophie |date=December 10, 2024 |title=Luigi Mangione job resume reveals video game work on "Civilization VI" |url=https://www.newsweek.com/luigi-mangione-civ-vi-resume-1998403 |access-date=March 20, 2025 |website=Newsweek |language=en}} During the summer of 2019, he served as a head counselor for Stanford University's artificial intelligence pre-collegiate studies program in California.

In November 2020, Mangione began working remotely as a data engineer for TrueCar.{{Cite web |last1=Tsui |first1=Karina |last2=Almasy |first2=Steve |last3=Rose |first3=Andy |last4=Miller |first4=John |last5=Gingras |first5=Brynn |last6=Scannell |first6=Kara |date=December 12, 2024 |title=He cut off some loved ones for months. Now, suspect Luigi Mangione faces mounting evidence in health care CEO's killing |url=https://www.cnn.com/2024/12/12/us/unitedhealthcare-ceo-shooting-suspect-thursday-hnk/index.html |url-status=live |archive-url=https://web.archive.org/web/20241213003508/https://www.cnn.com/2024/12/12/us/unitedhealthcare-ceo-shooting-suspect-thursday-hnk/index.html |archive-date=December 13, 2024 |access-date=December 13, 2024 |website=CNN |language=en}}{{Cite web |last=Campbell |first=Jaelyn |date=December 11, 2024 |title=Former TrueCar employee linked to the murder of UnitedHealthcare CEO |url=https://www.cbtnews.com/former-truecar-employee-linked-to-murder-of-unitedhealthcare-ceo/ |access-date=December 13, 2024 |website=CBT News |language=en-US}} He left his job at the end of February 2023, sharing with his former classmate that "Data engineering paid super well but was mind-numbingly boring" and that he wanted to "spend more time reading and doing yoga."

{{Broader|Killing of Brian Thompson}}

Brian Thompson, CEO of the American health insurance company UnitedHealthcare, was shot and killed in Midtown Manhattan on December 4, 2024. The shooting occurred early in the morning outside an entrance to the New York Hilton Midtown hotel and was captured on video. Thompson was shot in the leg and the back.{{Cite news |last=Halpert |first=Madeline |date=December 4, 2024 |title=Brian Thompson: United Healthcare CEO fatally shot outside Manhattan hotel |url=https://www.bbc.com/news/articles/cnv3dnm64vlo |url-status=deviated |archive-url=https://web.archive.org/web/20241204154011if_/https://www.bbc.com/news/articles/cnv3dnm64vlo |archive-date=December 4, 2024 |access-date=December 5, 2024 |publisher=BBC News |location=New York City}} Thompson was in the city to attend an annual investors' meeting for UnitedHealthcare's parent company, UnitedHealth Group. The suspect, initially described as a white man wearing a mask, fled the scene.{{Cite news |date=December 5, 2024 |title=What we know about New York City shooting of UnitedHealthcare boss Brian Thompson |url=https://news.sky.com/story/what-we-know-about-new-york-city-shooting-of-unitedhealthcare-boss-brian-thompson-13267264 |url-status=live |archive-url=https://web.archive.org/web/20241210000552if_/https://news.sky.com/story/what-we-know-about-new-york-city-shooting-of-unitedhealthcare-boss-brian-thompson-13267264 |archive-date=December 10, 2024 |access-date=December 8, 2024 |website=Sky News}} The gunman was masked and had come to New York via a bus from Atlanta.{{Cite web |last1=Katersky |first1=Aaron |author-link1=Aaron Katersky |last2=Crudele |first2=Mark |last3=Hutchinson |first3=Bill |last4=Haworth |first4=Jon |last5=Pereira |first5=Ivan |date=December 7, 2024 |title=UnitedHealthcare CEO shooting latest: Suspect's backpack had Monopoly money: Sources |url=https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-latest-manhunt-nationwide-police-learn/story?id=116551771 |url-status=live |archive-url=https://web.archive.org/web/20241208012216/https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-latest-manhunt-nationwide-police-learn/story?id=116551771 |archive-date=December 8, 2024 |access-date=December 10, 2024 |website=ABC News}}{{Cite web |last=Halpert |first=Madeline |date=December 5, 2024 |title=NYPD hunts gun-wielding assailant who killed UnitedHealthcare CEO outside hotel |url=https://www.bbc.com/news/articles/cnv3dnm64vlo |url-status=live |archive-url=https://web.archive.org/web/20241210110048/https://www.bbc.com/news/articles/cnv3dnm64vlo |archive-date=December 10, 2024 |access-date=December 10, 2024 |website=BBC News}} The words "delay", "deny", and "depose" were written on the spent cases and an ejected cartridge.{{Cite news |last1=Miller |first1=John |last2=Musa |first2=Amanda |last3=Riess |first3=Rebekah |last4=Goldman |first4=David |last5=Gingras |first5=Brynn |date=December 4, 2024 |title=Gunman at large after UnitedHealthcare CEO fatally shot in 'brazen targeted attack,' police say |url=https://www.cnn.com/2024/12/04/us/brian-thompson-united-healthcare-death/index.html |url-status=live |archive-url=https://web.archive.org/web/20241205011449if_/https://www.cnn.com/2024/12/04/us/brian-thompson-united-healthcare-death/index.html |archive-date=December 5, 2024 |access-date=December 5, 2024 |work=CNN}}{{Cite web |last1=Williams |first1=Ashley R. |last2=Luhby |first2=Tami |last3=Duffy |first3=Clare |date=December 7, 2024 |title='Delay,' 'deny' and 'depose' written on ammunition found after killing of health care CEO, NYPD says |url=https://www.cnn.com/us/live-news/brian-thompson-unitedhealthcare-news-12-6-24#cm4dfpl1800003b6mh8llcbm4 |url-status=live |archive-url=https://web.archive.org/web/20241214001319/https://www.cnn.com/us/live-news/brian-thompson-unitedhealthcare-news-12-6-24/#cm4dfpl1800003b6mh8llcbm4 |archive-date=December 14, 2024 |access-date=December 16, 2024 |website=CNN}}{{Cite web |date=December 7, 2024 |title=Police clarify bullet language |url=https://apnews.com/live/unitedhealthcare-ceo-brian-thompson-updates-day-3#00000193-9e4f-d530-a99f-becfd2f10000 |url-status=live |archive-url=https://web.archive.org/web/20241217214601/https://apnews.com/live/unitedhealthcare-ceo-brian-thompson-updates-day-3#00000193-9e4f-d530-a99f-becfd2f10000 |archive-date=December 17, 2024 |access-date=December 16, 2024 |website=Associated Press}} The three words are similar to "Delay, Deny, Defend", a well-known phrase in the insurance industry alluding to insurance companies' efforts to avoid paying claims.{{Cite magazine |last=Ford |first=Matt |date=December 6, 2024 |title=Why Many Americans Are Celebrating the UnitedHealthcare CEO's Murder |url=https://newrepublic.com/article/189121/unitedhealthcare-brian-thompson-shooting-social-media-reaction |access-date=December 17, 2024 |magazine=The New Republic}} The suspect was seen at a bus terminal after the killing.{{Cite web |last=Cramer |first=Maria |date=December 6, 2024 |title=Police Find Backpack in Central Park, a Possible Link to Gunman Who Killed C.E.O. |url=https://www.nytimes.com/live/2024/12/06/nyregion/unitedhealthcare-ceo-brian-thompson#abb6ad03-20cb-57a6-a0ca-d4cca7e858c2 |access-date=December 10, 2024 |website=The New York Times}} In a Central Park wooded area, New York police discovered a backpack—which supposedly the gunman had disposed of—that contained Monopoly money and a Tommy Hilfiger jacket.

After a five-day nationwide manhunt, local police arrested Mangione at a McDonald's restaurant in Altoona, Pennsylvania, on December 9, 2024. The police responded to a call from an employee made after a customer noticed similarities between Mangione's appearance and images of Thompson's alleged killer released by the New York City Police Department (NYPD).{{Cite web |last1=Limehouse |first1=Jonathan |last2=Kenning |first2=Chris |last3=Voyles Pulver |first3=Dinah |date=December 10, 2024 |title=Who is Luigi Mangione, detained in UnitedHealthcare CEO's killing? Here's what we know |url=https://www.usatoday.com/story/news/nation/2024/12/09/person-detained-unitedhealthcare-ceo/76862090007/ |url-status=live |archive-url=https://web.archive.org/web/20241209214819/https://www.usatoday.com/story/news/nation/2024/12/09/person-detained-unitedhealthcare-ceo/76862090007/ |archive-date=December 9, 2024 |access-date=December 10, 2024 |website=USA Today}}{{Cite web |last=Liddell |first=James |date=December 10, 2024 |title=Luigi Mangione 'went missing' after back surgery as friends reveal health issues |url=https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-spondylolisthesis-back-pain-reddit-surgery-b2662396.html |url-status=live |archive-url=https://web.archive.org/web/20241213062554/https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-spondylolisthesis-back-pain-reddit-surgery-b2662396.html |archive-date=December 13, 2024 |access-date=December 10, 2024 |website=The Independent}}{{Cite web |last=Sayer |first=Ricky |date=December 10, 2024 |title=Luigi Mangione's arrest in Altoona McDonald's baffles residents: 'Here of all places' |url=https://www.cbsnews.com/pittsburgh/news/luigi-mangione-arrest-altoona-pennsylvania-mcdonalds-reaction/ |access-date=December 12, 2024 |website=CBS News |archive-date=December 26, 2024 |archive-url=https://web.archive.org/web/20241226175730/https://www.cbsnews.com/pittsburgh/news/luigi-mangione-arrest-altoona-pennsylvania-mcdonalds-reaction/ |url-status=live}} Altoona is about {{Convert|280|mi|km}} west of New York City.{{Cite news |last1=Parker |first1=Jessica |last2=Sheerin |first2=Jude |date=December 9, 2024 |title=Luigi Mangione charged with murdering healthcare CEO in New York |url=https://www.bbc.com/news/articles/cly2zwqqr1ro |url-status=live |archive-url=https://web.archive.org/web/20241210061237/https://www.bbc.com/news/articles/cly2zwqqr1ro |archive-date=December 10, 2024 |access-date=December 10, 2024 |website=BBC News}} The police reported that Mangione was "visibly shaken" when they asked him if he had recently visited New York City.{{Cite web |last1=Hammond |first1=Elise |last2=Mascarenhas |first2=Lauren |last3=Watson |first3=Michelle |last4=Almasy |first4=Steve |last5=Romine |first5=Taylor |date=December 9, 2024 |title=Luigi Mangione, the suspect in UnitedHealthcare CEO shooting, appears in court |url=https://www.cnn.com/us/live-news/brian-thompson-unitedhealthcare-death-investigation-12-9-24/index.html |access-date=December 10, 2024 |website=CNN |language=en}}

Upon searching Mangione, police said they found a 3D-printed gun and a 3D-printed suppressor that were similar to the weapons used in the shooting. Police stated that they also found a fake driver's license from New Jersey bearing the name "Mark Rosario." A man who checked into a Manhattan hostel in late November used the same license.{{Cite AV media |url=https://www.youtube.com/live/OIa0aPOkhnE?si=EVh2-9-fHNYvYAhh |title=LIVE: NYC Mayor Eric Adams holds press conference on UnitedHealthcare CEO shooting |date=December 9, 2024 |work=Associated Press |access-date=December 9, 2024 |via=YouTube}}{{Cite news |date=December 9, 2024 |title=Live updates: Man questioned in UnitedHealthcare CEO Brian Thompson killing had gun, silencer and fake ID |url=https://www.nbcnews.com/news/us-news/live-blog/live-updates-man-questioned-unitedhealthcare-ceo-brian-thompsons-shoot-rcna183160 |access-date=December 9, 2024 |work=NBC News}} Shell casings found at the crime scene reportedly matched the gun found on Mangione.{{cite news |last1=Parker |first1=Jessica |last2=Yousif |first2=Nadine |url=https://www.bbc.co.uk/news/articles/ceqlj130rxpo |title=Luigi Mangione fingerprints match crime-scene prints, police say |newspaper=BBC News |date=11 December 2024 |archive-date=December 25, 2024 |access-date=January 11, 2025 |archive-url=https://web.archive.org/web/20241225093209/https://www.bbc.co.uk/news/articles/ceqlj130rxpo |url-status=live}} The police also said that when they arrested him, they found a 262-word handwritten document partly about the American healthcare system.{{Cite news |last=Simmons-Duffin |first=Selena |date=December 12, 2024 |title=UHC murder suspect railed about U.S. health care. Here's what he missed |url=https://www.npr.org/sections/shots-health-news/2024/12/12/nx-s1-5224139/mangione-uhc-brian-thompson-shooting-health-care |url-status=live |archive-url=https://web.archive.org/web/20241219133421/https://www.npr.org/sections/shots-health-news/2024/12/12/nx-s1-5224139/mangione-uhc-brian-thompson-shooting-health-care |archive-date=December 19, 2024 |access-date=December 22, 2024 |work=Morning Edition |publisher=NPR}}{{Cite news |last=Newman |first=Andy |date=December 9, 2024 |title=Suspect in Health Care C.E.O.'s Killing Charged With Murder |url=https://www.nytimes.com/live/2024/12/09/nyregion/unitedhealthcare-ceo-shooting-news/4fdeebf4-3a8c-5e3d-9aaf-ee420c56001b?smid=url-share |access-date=December 9, 2024 |work=The New York Times |publisher=}} Mangione had no prior criminal record.{{Cite magazine |last=Alaimo |first=Kara |date=December 13, 2024 |title=The Internet Missed the Point on Luigi Mangione |url=https://time.com/7201952/luigi-mangione-internet-myths-essay/ |access-date=December 20, 2024 |magazine=Time |language=en}}

Upon Mangione's arrest, police said they found in his possession a 262-word handwritten document, which many media outlets characterized as a "manifesto." The handwritten document spoke to Mangione's "motivation and mindset," according to NYPD Commissioner Jessica Tisch.{{Cite news |date=December 9, 2024 |title=Suspect in Health Care C.E.O.'s Killing Charged With Murder |url=https://www.nytimes.com/live/2024/12/09/nyregion/unitedhealthcare-ceo-shooting-news |url-status=live |archive-url=https://web.archive.org/web/20241217004658/https://www.nytimes.com/live/2024/12/09/nyregion/unitedhealthcare-ceo-shooting-news |archive-date=December 17, 2024 |access-date=December 19, 2024 |work=The New York Times |language=en}}{{Cite web |last1=Sundby |first1=Alex |last2=Doyle |first2=John |last3=Ferris |first3=Layla |last4=Doan |first4=Laura |last5=Li |first5=Emma |last6=Breen |first6=Kerry |date=December 18, 2024 |title=What we know about Luigi Mangione, suspect charged in UnitedHealthcare CEO's killing |url=https://www.cbsnews.com/news/luigi-mangione-healthcare-ceo-shooting-what-we-know/ |access-date=January 5, 2025 |website=CBS}} Journalist Ken Klippenstein published a transcription of the document police said was found on him. Police confirmed that the transcription was legitimate.{{Cite news |last=Klippenstein |first=Ken |author-link=Ken Klippenstein |date=December 10, 2024 |title=Exclusive: Luigi's Manifesto |url=https://www.kenklippenstein.com/p/luigis-manifesto |access-date=January 5, 2025 |archive-date=January 5, 2025 |archive-url=https://web.archive.org/web/20250105114623/https://www.kenklippenstein.com/p/luigis-manifesto |url-status=live}}{{cite web |last1=Montag |first1=Madison |title=Independent journalist releases copy of Luigi Mangione's manifesto |url=https://www.pennlive.com/crime/2024/12/independent-journalist-releases-copy-of-luigi-mangiones-manifesto.html |website=Pennlive |access-date=17 January 2025 |language=en |date=11 December 2024}}{{Cite web |last=Novak |first=Matt |date=December 10, 2024 |title='They Continue to Abuse Our Country for Immense Profit': Luigi Mangione's Alleged Manifesto Leaks Online |url=https://gizmodo.com/they-continue-to-abuse-our-country-for-immense-profit-luigi-mangiones-manifesto-leaks-online-2000536812 |access-date=January 7, 2025 |website=Gizmodo |language=en-US}} The document reads:

To the Feds, I'll keep this short, because I do respect what you do for our country. To save you a lengthy investigation, I state plainly that I wasn't working with anyone. This was fairly trivial: some elementary social engineering, basic CAD, a lot of patience. The spiral notebook, if present, has some straggling notes and {{sic|nolink=y| To Do}} lists that illuminate the gist of it. My tech is pretty locked down because I work in engineering so probably not much info there. I do apologize for any strife {{sic|nolink=y|?|of}} traumas but it had to be done. Frankly, these parasites simply had it coming. A reminder: the US has the #1 most expensive healthcare system in the world, yet we rank roughly #42 in life expectancy. United is the [indecipherable] largest company in the US by market cap, behind only Apple, Google, Walmart. It has grown and grown, but {{sic|nolink=y|as}} our life expectancy? No the reality is, these [indecipherable] have simply gotten too powerful, and they continue to abuse our country for immense profit because the American public has {{sic|nolink=y| allwed}} them to get away with it. Obviously the problem is more complex, but I do not have space, and frankly I do not pretend to be the most qualified person to lay out the full argument. But many have illuminated the corruption and greed (e.g.: Rosenthal, Moore), decades ago and the problems simply remain. It is not an issue of awareness at this point, but clearly power games at play. Evidently I am the first to face it with such brutal honesty.

The complaint filed by the United States Attorney for the Southern District of New York calls the letter "The Feds Letter" because it is addressed "To the Feds."{{cite web |title=United States of America V. Luigi Nicholas Mangione; Sealed Complaint |url=https://www.justice.gov/d9/2024-12/signed_complaint_mangione.pdf |website=justice.gov |publisher=United States Department of Justice |access-date=23 December 2024 |archive-date=December 19, 2024 |archive-url=https://web.archive.org/web/20241219223033/https://www.justice.gov/d9/2024-12/signed_complaint_mangione.pdf |url-status=live}} The complaint filed by the U.S. Attorney's office also stated: 'P.S. you can check serial numbers to verify this is all self-funded. My own ATM withdrawals.{{'}},{{Cite court|reporter=U.S. Attorney's Office, Southern District of New York|court=United States District Court Southern District of New York|date=December 18, 2024|url=https://storage.courtlistener.com/recap/gov.uscourts.nysd.633811/gov.uscourts.nysd.633811.1.0.pdf|litigants=UNITED STATES OF AMERICA v. LUIGI NICHOLAS MANGIONE, Defendant|pinpoint=8d|archive-date=February 16, 2025|archive-url=https://web.archive.org/web/20250216093933/https://storage.courtlistener.com/recap/gov.uscourts.nysd.633811/gov.uscourts.nysd.633811.1.0.pdf|url-status=live}} which is not shown in the document released by Klippenstein.

{{Infobox court case

| name = Commonwealth v. Mangione

| court = Commonwealth Court of Pennsylvania

| image = Commonwealth Court of PA logo.svg

| imagesize = 100px

| full name = Commonwealth of Pennsylvania v. Luigi Nicholas Mangione

| citations =

| number of judges =

| italic title = no

| docket = [https://www.pacourts.us/news-and-statistics/cases-of-public-interest/commonwealth-v-mangione MJ-24102-CR-0000623-2024]

}}

On December 9, 2024, Mangione was charged in Blair County, Pennsylvania, with carrying a gun without a license, forgery, falsely identifying himself to the authorities, and possessing "instruments of crime."{{Cite news |date=December 9, 2024 |title=Suspect in Health Care C.E.O.'s Killing Charged With Murder |url=https://www.nytimes.com/live/2024/12/09/nyregion/unitedhealthcare-ceo-shooting-news |url-status=live |archive-url=https://web.archive.org/web/20241210053315if_/https://www.nytimes.com/live/2024/12/09/nyregion/unitedhealthcare-ceo-shooting-news |archive-date=December 10, 2024 |access-date=December 10, 2024 |work=The New York Times}} He was arraigned at approximately 6 p.m. at the Blair County Courthouse on firearms charges, was questioned by members of the NYPD,{{Cite web |last=Wise |first=Alana |date=December 9, 2024 |title=UnitedHealthcare shooting 'person of interest' Luigi Mangione arraigned in Pennsylvania |url=https://www.npr.org/2024/12/09/g-s1-37509/brian-thompson-shooting-arrest-luigi-mangione-united-healthcare |url-status=live |archive-url=https://web.archive.org/web/20241210004310/https://www.npr.org/2024/12/09/g-s1-37509/brian-thompson-shooting-arrest-luigi-mangione-united-healthcare |archive-date=December 10, 2024 |access-date=December 10, 2024 |website=NPR}} and was denied bail.{{Cite web |date=December 9, 2024 |title=Luigi Mangione Questioned By Police At Blair County Courthouse |url=https://www.inkl.com/news/luigi-mangione-questioned-by-police-at-blair-county-courthouse |access-date=December 10, 2024 |website=Inkl |archive-date=December 19, 2024 |archive-url=https://web.archive.org/web/20241219184354/https://www.inkl.com/news/luigi-mangione-questioned-by-police-at-blair-county-courthouse |url-status=live}}{{Cite news |last1=Williams |first1=Ashley R. |last2=Pazmino |first2=Gloria |last3=Morales |first3=Mark |last4=Gingras |first4=Brynn |last5=Miller |first5=John |last6=Andone |first6=Dakin |date=December 9, 2024 |title=Suspect in killing of health care CEO arrested on gun charge in Pennsylvania, NYC top cop says |url=https://edition.cnn.com/2024/12/09/us/unitedhealthcare-ceo-brian-thompson-shooter-monday/index.html |url-status=live |archive-url=https://web.archive.org/web/20241209190410if_/https://edition.cnn.com/2024/12/09/us/unitedhealthcare-ceo-brian-thompson-shooter-monday/index.html |archive-date=December 9, 2024 |access-date=December 9, 2024 |work=CNN}} As he was led into the courthouse, Mangione shouted to the gathered cameras that the news media coverage of the event was "completely out of touch" and "an insult to the intelligence of the American people and their lived experience."{{cite web |first=Edward|last= Helmore |title=Man charged in killing of healthcare CEO responds to supporters on website |url=https://www.theguardian.com/us-news/2025/feb/15/luigi-mangioni-website |website=The Guardian |date=15 February 2025}}{{cite web |last1=Bogel-Burroughs |first1=Nicholas |title=Suspect in C.E.O. Killing Agrees to Be Extradited to New York |url=https://www.nytimes.com/2024/12/19/us/luigi-mangione-extradition-new-york.html |website=The New York Times |date=19 December 2024 |access-date=February 16, 2025 |archive-date=February 26, 2025 |archive-url=https://web.archive.org/web/20250226103415/https://www.nytimes.com/2024/12/19/us/luigi-mangione-extradition-new-york.html |url-status=live}}{{Cite web |url=https://www.nbclosangeles.com/news/business/money-report/luigi-mangione-rages-about-insult-to-the-american-people-before-unitedhealthcare-murder-extradition-hearing/3579401/ |title=Luigi Mangione rages about 'insult' to American people, challenges UnitedHealthcare murder extradition |first=Dan |last=Mangan |date=December 11, 2024 |work=NBC Los Angeles |access-date=January 13, 2025 |archive-date=December 13, 2024 |archive-url=https://web.archive.org/web/20241213180018/https://www.nbclosangeles.com/news/business/money-report/luigi-mangione-rages-about-insult-to-the-american-people-before-unitedhealthcare-murder-extradition-hearing/3579401/ |url-status=live}}

Later that day, Mangione was charged in Manhattan with second-degree murder,{{efn|name=NYmurder}} three counts of illegal weapons possession, and forgery.{{Cite web |last1=Corey Kilgannon |last2=Baker |first2=Mike |last3=Broadwater |first3=Luke |last4=Hubler |first4=Shawn |date=December 9, 2024 |title=Suspect in C.E.O. Killing Withdrew From a Life of Privilege and Promise |url=https://www.nytimes.com/2024/12/09/nyregion/united-healthcare-ceo-shooting-luigi-mangione.html |url-access=subscription |url-status=live |archive-url=https://web.archive.org/web/20241210114728/https://www.nytimes.com/2024/12/09/nyregion/united-healthcare-ceo-shooting-luigi-mangione.html |archive-date=December 10, 2024 |access-date=December 10, 2024 |website=The New York Times}} He was temporarily transferred to the State Correctional Institution at Huntingdon, a close-security state correctional facility in Huntingdon County, Pennsylvania.{{Cite web |last=Bohnel |first=Steve |date=December 11, 2024 |title=Inside SCI-Huntingdon, the prison where Luigi Mangione is being held |url=https://www.post-gazette.com/news/crime-courts/2024/12/11/luigi-mangione-unitedhealthcare-ceo-huntingdon/stories/202412110077 |url-status=live |archive-url=https://web.archive.org/web/20241212113338/https://www.post-gazette.com/news/crime-courts/2024/12/11/luigi-mangione-unitedhealthcare-ceo-huntingdon/stories/202412110077 |archive-date=December 12, 2024 |access-date=December 13, 2024 |website=Pittsburgh Post-Gazette |language=en}}

{{Infobox court case

| name = People v. Mangione

| court = New York Supreme Court

| image = New York Unified Court System seal.svg

| imagesize = 100px

| full name = People of the State of New York v. Luigi Mangione

| citations = [https://manhattanda.org/wp-content/uploads/2024/12/Mangione-Indictment-FINAL-as-filed.pdf CR-036031-24NY]

| number of judges =

| italic title = no

| docket = [https://iapps.courts.state.ny.us/webcrim_attorney/Detail?which=case&docketNumber=KjdG8Sv0W37JPvBbwdxZT7Sdy96dK4ezB7_PLUS_ORfwPETg=&courtType=U&countyId=K4i18rFVPQh5HTQ/kUoO3Q==&docketId=ggXRWfWMhgdl1kMR_PLUS_hch9Q==&docketDseq=T/O1YN_PLUS_BG65HkOeqEnpAkw==&defendantName=MANGIONE,+LUIGI&county=&court=New+York+Supreme+Criminal+Court&recordType=U&recordNum= IND-75657-24/001]

}}

On December 17, 2024, the Manhattan district attorney's office indicted Mangione on 11 New York state charges.{{Cite news |last1=Romero |first1=Dennis |last2=Planas |first2=Antonio |date=December 17, 2024 |title=Luigi Mangione indicted on first-degree murder charge in UnitedHealthcare CEO's killing |url=https://www.nbcnews.com/news/us-news/luigi-mangione-indicted-first-degree-murder-charge-grand-jury-unitedhe-rcna184313 |url-status=live |archive-url=https://web.archive.org/web/20241217230618/https://www.nbcnews.com/news/us-news/luigi-mangione-indicted-first-degree-murder-charge-grand-jury-unitedhe-rcna184313 |archive-date=December 17, 2024 |access-date=December 17, 2024 |work=NBC News}}

{{Row numbers|

}}

{{Infobox court case

| name = United States v. Mangione

| court = United States District Court for the Southern District of New York

| image = USDCSDNY.svg

| imagesize = 100px

| full name = United States of America v. Luigi Nicholas Mangione

| docket = [https://www.courtlistener.com/docket/69908890/united-states-v-mangione/ 1:25-CR-00176]

| italic title = no

}}

{{wikisource|Luigi Mangione federal complaint}}

Mangione was extradited to New York City on December 19, 2024, and charged with four federal crimes.{{Cite web |last=Halpert |first=Madeline |date=December 19, 2024 |title=Luigi Mangione returns to New York to face federal charges in fatal shooting |url=https://www.bbc.com/news/articles/c24nrynq0elo |url-status=live |archive-url=https://web.archive.org/web/20241220011443/https://www.bbc.com/news/articles/c24nrynq0elo |archive-date=December 20, 2024 |access-date=December 20, 2024 |website=BBC |language=en-GB}}{{Cite web |date=December 19, 2024 |title=Office of Public Affairs {{!}} Luigi Mangione Charged with the Stalking and Murder of UnitedHealthcare CEO Brian Thompson and Use of a Silencer in a Crime of Violence {{!}} United States Department of Justice |url=https://www.justice.gov/opa/pr/luigi-mangione-charged-stalking-and-murder-unitedhealthcare-ceo-brian-thompson-and-use |url-status=live |archive-url=https://web.archive.org/web/20241223140636/https://www.justice.gov/opa/pr/luigi-mangione-charged-stalking-and-murder-unitedhealthcare-ceo-brian-thompson-and-use |archive-date=December 23, 2024 |access-date=December 23, 2024 |website=United States Department of Justice |language=en}} On December 23, he was arraigned in the New York Supreme Court and pleaded not guilty to his state charges.{{Cite web |last=Debusmann |first=Bernd Jr. |date=December 23, 2024 |title=Luigi Mangione pleads not guilty to murdering healthcare CEO |url=https://www.bbc.com/news/articles/cwypvd9kdewo |url-status=live |archive-url=https://web.archive.org/web/20241223163707/https://www.bbc.com/news/articles/cwypvd9kdewo |archive-date=December 23, 2024 |access-date=December 23, 2024 |website=BBC News}} On April 17, 2025, he was formally indicted on his federal charges.{{Cite web |last1=Tanyos |first1=Faris |title=Luigi Mangione indicted on federal charges in UnitedHealthcare CEO's killing |url=https://www.cbsnews.com/news/luigi-mangione-indicted-federal-charges-in-unitedhealthcare-ceo-killing/ |website=CBS News |access-date=April 26, 2025 |archive-url=https://web.archive.org/web/20250426151841/https://www.cbsnews.com/news/luigi-mangione-indicted-federal-charges-in-unitedhealthcare-ceo-killing/ |archive-date=April 26, 2025 |date=April 17, 2025 |url-status=live}}

{{Row numbers|

}}

Possible remedies for murder through the use of a firearm—the third federal charge—include the death penalty.{{Cite news |date=December 19, 2024 |title=Luigi Mangione could face death penalty under new federal charges |url=https://www.abc.net.au/news/2024-12-20/luigi-mangione-court-pennsylvania-new-york-extradition/104749008 |agency=AP/ABC |url-status=live |archive-url=https://web.archive.org/web/20241220130156/https://www.abc.net.au/news/2024-12-20/luigi-mangione-court-pennsylvania-new-york-extradition/104749008 |archive-date=December 20, 2024 |access-date=December 21, 2024 |work=ABC News |language=en-AU}} During his second presidency, President Donald Trump signed an executive order that requires the death penalty to be used wherever possible. U.S. Attorney General Pam Bondi announced on April 1, 2025, that prosecutors would seek the death penalty in Mangione's federal case. The state charges carry a maximum penalty of life imprisonment.{{cite act |title=Restoring the Death Penalty and Protecting Public Safety |italics=true |date=January 20, 2025 |prefix=EO |number=14164 |url=https://www.federalregister.gov/documents/2025/01/30/2025-02012/restoring-the-death-penalty-and-protecting-public-safety}}{{cite web |title=Donald Trump death penalty order sparks huge Luigi Mangione donation |url=https://www.newsweek.com/donald-trump-death-penalty-order-sparks-huge-luigi-mangione-donation-2033284 |website=Newsweek |language=en |date=19 February 2025 |access-date=February 19, 2025 |archive-date=February 19, 2025 |archive-url=https://web.archive.org/web/20250219215840/https://www.newsweek.com/donald-trump-death-penalty-order-sparks-huge-luigi-mangione-donation-2033284 |url-status=live}}{{cite web |last1=SISAK |first1=MICHAEL R. |last2=RICHER |first2=ALANNA DURKIN |title=Prosecutors directed to seek death penalty against UnitedHealthcare killing suspect Luigi Mangione |url=https://apnews.com/article/unitedhealthcare-ceo-killing-luigi-mangione-nyc-29dba97034d4fa81822f481d08cf2842 |website=Associated Press |date=April 2025 |access-date=1 April 2025}}{{Cite web |last=Barber |first=Corinne Ramey and C. Ryan |title=Attorney General Directs Prosecutors to Seek Death Penalty Against Luigi Mangione |url=https://www.wsj.com/us-news/law/luigi-mangione-death-penalty-united-health-brian-thompson-killing-6f90f70a |access-date=2025-04-01 |website=WSJ |language=en-US}}{{efn|name=FedCapitalJury}}

Mangione is being held at the Metropolitan Detention Center (MDC) in Brooklyn under Federal Register Number 52503-511. He will remain at MDC Brooklyn until his trial.

{{wikisource|Defendant Luigi Mangione's Motion to Preclude the Government From Seeking the Death Penalty}}

Mangione retained defense attorney Thomas Dickey for his Pennsylvania case.{{Cite news |last1=Sisak |first1=Michael R. |last2=Scolford |first2=Mark |date=December 10, 2024 |title=Suspect in the killing of UnitedHealthcare's CEO struggles, shouts while entering courthouse |url=https://apnews.com/article/unitedhealthcare-ceo-shooting-suspect-c68d0328f278d85fcf201ae89f634098 |url-status=live |archive-url=https://archive.today/20241211041603/https://apnews.com/article/unitedhealthcare-ceo-shooting-suspect-c68d0328f278d85fcf201ae89f634098 |archive-date=December 11, 2024 |access-date=December 10, 2024 |publisher=Associated Press}}{{Cite news |last1=Cann |first1=Christopher |last2=Ortiz |first2=Jorge L. |date=December 10, 2024 |title=Luigi Mangione denied bail, will fight extradition in killing of UnitedHealthcare CEO |url=https://www.usatoday.com/story/news/nation/2024/12/10/luigi-mangione-unitedhealthcare-ceo-brian-thompson-shooter/76881755007/ |access-date=December 10, 2024 |work=USA Today}} On December 13, he retained Karen Friedman Agnifilo, a former prosecutor at the Manhattan district attorney's office and former legal analyst with CNN, as his defense attorney for the New York case.{{Cite web |last=Collins |first=Kaitlan |date=December 14, 2024 |title=Luigi Mangione retains high-powered New York attorney as he faces second-degree murder charge |url=https://edition.cnn.com/2024/12/13/us/luigi-mangione-new-york-attorney-retained/index.html |access-date=December 14, 2024 |website=CNN |language=en |archive-date=December 24, 2024 |archive-url=https://web.archive.org/web/20241224111408/https://edition.cnn.com/2024/12/13/us/luigi-mangione-new-york-attorney-retained/index.html |url-status=live}} He later hired prison consultant Craig Rothfeld to assist with matters related to his incarceration.{{Cite web |last=Silverglate |first=Roberta |date=2025-04-02 |title=What's Next for Luigi Mangione After DOJ Reveals It Seeks Death Penalty |url=https://calbizjournal.com/whats-next-for-luigi-mangione-after-doj-reveals-it-seeks-death-penalty/ |access-date=2025-04-03 |website=California Business Journal |language=en-US}}

Mangione pleaded not guilty to all of the Pennsylvania and New York charges. After the announcement of the death penalty in April, his New York defense team requested that the judge block the Justice Department from pursuing the death penalty, arguing that the decision was a "publicity stunt"{{Cite web |last=Scannell |first=Kara |date=2025-04-11 |title=Luigi Mangione: Lawyers ask judge to block DOJ from seeking death penalty |url=https://edition.cnn.com/2025/04/11/us/luigi-mangione-block-death-penalty/index.html |access-date=2025-04-12 |website=CNN |language=en}} and "consistent with the new culture of the highest levels of the Justice Department, one that values personal will over process, publicity over discretion and partisan politics over justice."{{Cite news |last1=Weiser |first1=Benjamin |last2=Meko |first2=Hurubie |date=2025-04-11 |title=Mangione Says U.S. Bid to Execute Him Is an Instagram Stunt |url=https://www.nytimes.com/2025/04/11/nyregion/luigi-mangione-death-penalty.html |access-date=2025-04-18 |work=The New York Times |language=en-US |issn=0362-4331}}

On December 13, crowdfunding platform GoFundMe removed fundraisers created to support Mangione due to the site's terms of service prohibiting fundraisers for the legal defense of violent crimes.{{Cite web |last1=Bhojwani |first1=Janhvi |last2=Goggin |first2=Ben |date=December 13, 2024 |title=As GoFundMe pulls Luigi Mangione fundraisers, another platform is featuring one on its front page |url=https://www.nbcnews.com/tech/internet/gofundme-pulls-luigi-mangione-fundraisers-another-platform-featuring-o-rcna184044 |url-status=live |archive-url=https://web.archive.org/web/20241214011346/https://www.nbcnews.com/tech/internet/gofundme-pulls-luigi-mangione-fundraisers-another-platform-featuring-o-rcna184044 |archive-date=December 14, 2024 |access-date=December 13, 2024 |website=NBC News}} A GiveSendGo fundraiser has remained live and, as of May 2025, has raised over {{US$|1 million|link=https://www.givesendgo.com/legalfund-ceo-shooting-suspect}}.{{cite web |title=Luigi Mangione's legal defense fund tops $1 million in donations - CBS New York |url=https://www.cbsnews.com/newyork/news/luigi-mangione-legal-defense-fun-unitedhealthcare-ceo-murder/ |website=www.cbsnews.com |access-date=8 May 2025 |date=7 May 2025}} Donors have cited the "politicization" of the case, the potential use of the death penalty, due process, and frustrations with the healthcare system as reasons for their donations.{{cite web |title=Luigi Mangione Fundraiser Hits New Milestone |url=https://www.newsweek.com/luigi-mangione-defense-fundraiser-brian-thompson-murder-2033907 |website=Newsweek |language=en |date=20 February 2025 |first=Jenna |last=Sundel |access-date=February 24, 2025 |archive-date=February 21, 2025 |archive-url=https://web.archive.org/web/20250221080140/https://www.newsweek.com/luigi-mangione-defense-fundraiser-brian-thompson-murder-2033907 |url-status=live}}{{cite web |last1=Mack |first1=M. B. |title=Anonymous Donor's $30K Gift to Luigi Mangione's Legal Fund Stating 'Due Process Is Lacking' Leaves Users in Shock |url=https://www.latintimes.com/anonymous-donors-30k-gift-luigi-mangiones-legal-fund-stating-due-process-lacking-leaves-576567 |website=Latin Times |language=en |date=24 February 2025}} Karen Friedman Agnifilo told Newsweek that Mangione is "aware of the fund and very much appreciates the outpouring of support" and "plans on utilizing it to fight all three of the unprecedented cases against him."{{cite web |title=Luigi Mangione officially accepts $300k for legal defense |url=https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-legal-fund-defense-b2695424.html |website=The Independent |language=en |date=10 February 2025}}{{cite web |last=Katersky |first=Aaron |title=Donations to Luigi Mangione's legal defense fund slowed, then surged |url=https://abcnews.go.com/US/donations-luigi-mangiones-legal-defense-fund-slowed-surged/story?id=118510427 |website=ABC News |language=en |access-date=February 6, 2025 |archive-date=February 7, 2025 |archive-url=https://web.archive.org/web/20250207162150/https://abcnews.go.com/US/donations-luigi-mangiones-legal-defense-fund-slowed-surged/story?id=118510427 |url-status=live}} On February 14, 2025, Mangione's New York defense team launched a website dedicated to providing updates on his prosecutions due to the "extraordinary volume of inquiries and outpouring of support."{{Cite web |date=2025-02-15 |title=Luigi Mangione shares first public message since arrest after CEO killing |url=https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-latest-website-b2698736.html |url-status=live |archive-url=https://web.archive.org/web/20250215130958/https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-website-statement-brian-thompson-b2698827.html |archive-date=February 15, 2025|access-date=February 17, 2025 |website=The Independent}}

After graduation, Mangione moved to Hawaii and resided at Surfbreak, a co-living space in Honolulu, from January to June 2022.{{Cite web |last1=Katersky |first1=Aaron |last2=Crudele |first2=Mark |last3=Margolin |first3=Josh |last4=Deliso |first4=Meredith |date=December 11, 2024 |title=What we know about Luigi Mangione, Ivy League grad charged in CEO's murder |url=https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-suspect/story?id=116460289 |url-status=live |archive-url=https://web.archive.org/web/20241214023304/https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-suspect/story?id=116460289 |archive-date=December 14, 2024 |access-date=December 11, 2024 |website=ABC News |language=en}}{{Cite web |date=2024-12-10 |title=The life of Luigi Mangione, including a brief residence in Hawaiʻi |url=https://www.hawaiipublicradio.org/national-international/2024-12-10/the-life-of-luigi-mangione-including-a-brief-residence-in-hawaii |access-date=2025-03-24 |website=Hawai'i Public Radio |language=en}} An avid reader,{{Cite web |last1=Baker |first1=Mike |last2=Bogel-Burroughs |first2=Nicholas |last3=Hubler |first3=Shawn |last4=Fortin |first4=Jacey |date=December 12, 2024 |title=Months Before C.E.O.'s Killing, the Suspect Went Silent. Where Was He? |url=https://www.nytimes.com/2024/12/12/us/luigi-mangione-gunman-united-healthcare-shooting.html |url-access=subscription |url-status=live |archive-url=https://web.archive.org/web/20241219160751/https://www.nytimes.com/2024/12/12/us/luigi-mangione-gunman-united-healthcare-shooting.html |archive-date=December 19, 2024 |access-date=December 20, 2024 |website=The New York Times}} he co-founded a book club at Surfbreak in 2023; the book club ended when Mangione left Hawaii later that year.

In February 2024, Mangione told a friend that he was "going backpacking for awhile," and did a solo trip through East and Southeast Asia, visiting Japan, Thailand, and other countries.

In the summer of 2024, Mangione stopped posting on social media.{{Cite web |last1=Skene |first1=Lea |last2=Kelleher |first2=Jennifer Sinco |date=December 13, 2024 |title=Back trouble and brain fog bothered suspect in UnitedHealthcare CEO killing, his posts show |url=https://apnews.com/article/luigi-mangione-back-surgery-mental-health-35086d2e01089f53db7b95e7b6c683e4 |url-status=live |archive-url=https://web.archive.org/web/20241213020311/https://apnews.com/article/luigi-mangione-back-surgery-mental-health-35086d2e01089f53db7b95e7b6c683e4 |archive-date=December 13, 2024 |access-date=December 13, 2024 |work=Associated Press News}} His family members reached out to his past friends for help in tracking him down, but were unsuccessful. On November 18, 2024, his mother reported him missing to the San Francisco Police Department; she stated that the family had not heard from him since July.{{Cite news |last=Lamb |first=Jonah Owen |date=December 16, 2024 |title=Luigi Mangione's missing-person report: See what SFPD gave to the FBI |url=https://sfstandard.com/2024/12/13/missing-person-luigi-mangione-sfpd-report/ |url-status=live |archive-url=https://web.archive.org/web/20241217200148/https://sfstandard.com/2024/12/13/missing-person-luigi-mangione-sfpd-report/ |archive-date=December 17, 2024 |access-date=December 20, 2024 |work=The San Francisco Standard}} She contacted the SFPD because she believed that he was living in San Francisco and still worked for TrueCar, which had an office there.{{Cite web |last=Cassidy |first=Megan |date=December 10, 2024 |title=SFPD report: Luigi Mangione's mother filed missing persons report, believing son was working in S.F. |url=https://www.sfchronicle.com/crime/article/luigi-mangione-sf-missing-persons-report-united-19971586.php |url-status=live |archive-url=https://web.archive.org/web/20241213153031/https://www.sfchronicle.com/crime/article/luigi-mangione-sf-missing-persons-report-united-19971586.php |archive-date=December 13, 2024 |access-date=December 12, 2024 |website=San Francisco Chronicle |language=en}}

Mangione had discussed getting Lyme disease at age 13, and wrote that he had been experiencing brain fog since high school. He had also sought advice online regarding irritable bowel syndrome and visual snow. While studying at the University of Pennsylvania, Mangione wrote in a post online that he had considered dropping out due to worsening health issues, but decided against it, writing, "Staying in college has at least let me maintain some semblance of normality".{{cite web |title=Back trouble and brain fog bothered suspect in UnitedHealthcare CEO killing, his posts show |url=https://www.wvtm13.com/article/luigi-mangione-spinal-surgery-arrest/63176726 |website=WVTM |access-date=26 April 2025 |language=en |date=13 December 2024}}

Mangione has written that he suffers from spondylolisthesis.{{Cite magazine |last=Klee |first=Miles |date=December 13, 2024 |title=Luigi Mangione Wrote Online About a Spine Disorder. Other Patients Say It's Hell |url=https://www.rollingstone.com/culture/culture-features/luigi-mangione-spinal-condition-spondylolisthesis-patients-1235202813/ |url-status=live |archive-url=https://web.archive.org/web/20241217004755/https://www.rollingstone.com/culture/culture-features/luigi-mangione-spinal-condition-spondylolisthesis-patients-1235202813/ |archive-date=December 17, 2024 |access-date=December 16, 2024 |magazine=Rolling Stone}} While he was living in Hawaii, his back pain worsened due to a surfing mishap, and he had expressed concerns to others about the pain. He reportedly underwent a spinal fusion surgery in July 2023 and wrote on social media that the surgery went well.{{Cite web |date=2024-12-13 |title=Back trouble and brain fog bothered suspect in UnitedHealthcare CEO killing, his posts show |url=https://apnews.com/article/luigi-mangione-back-surgery-mental-health-35086d2e01089f53db7b95e7b6c683e4 |access-date=2025-03-20 |website=AP News |language=en}} Police have stated that UnitedHealthcare did not insure Mangione.{{Cite web |last1=Dienst |first1=Jonathan |last2=Ma |first2=Kai |last3=Helsel |first3=Phil |date=December 13, 2024 |title=Suspect in CEO's killing wasn't insured by UnitedHealthcare, company says |url=https://www.nbcnews.com/news/us-news/suspect-ceos-killing-was-not-insured-unitedhealthcare-company-says-rcna184069 |url-status=live |archive-url=https://web.archive.org/web/20241213185144/https://www.nbcnews.com/news/us-news/suspect-ceos-killing-was-not-insured-unitedhealthcare-company-says-rcna184069 |archive-date=December 13, 2024 |access-date=December 13, 2024 |website=NBC News |language=en}}{{Cite web |date=December 12, 2024 |title=Police say suspect in UnitedHealthcare CEO killing wasn't a client of the insurer |url=https://apnews.com/article/luigi-mangione-united-healthcare-ceo-d148fbdde498c3ea4cf768945889d7e7 |url-status=live |archive-url=https://web.archive.org/web/20241217225427/https://apnews.com/article/luigi-mangione-united-healthcare-ceo-d148fbdde498c3ea4cf768945889d7e7 |archive-date=December 17, 2024 |access-date=December 18, 2024 |work=Associated Press News |language=en}}

After his arrest, several news outlets analyzed Mangione's social media to gather information about his social, political, and religious views.{{Cite news |last=Rothpletz |first=Peter |date=December 13, 2024 |title=Luigi Mangione is the median American voter |url=https://www.theguardian.com/commentisfree/2024/dec/13/luigi-mangione-american-voter |access-date=December 17, 2024 |work=The Guardian}} His Twitter account posted about topics such as "religion, history, ethics, and politics"{{Cite web |last=McGovern Jones |first=Kellen |date=December 11, 2024 |title=Mangione's X account frequently engages with topics related to religion, history, ethics, and politics |url=https://dallasexpress.com/crime/luigi-mangiones-complicated-world-view/ |url-status=live |archive-url=https://web.archive.org/web/20241222175219/https://dallasexpress.com/crime/luigi-mangiones-complicated-world-view/ |archive-date=December 22, 2024 |access-date=December 22, 2024 |website=Dallas Express}} and they found him to be "fascinated by AI and decision theory; pro-technology but anti-smartphones; secular and scientific in his outlook."{{Cite web |last=Dodds |first=Io |date=December 13, 2024 |title=The very online 'gray tribe' philosophy of alleged UnitedHealth killer Luigi Mangione |url=https://www.the-independent.com/news/world/americas/crime/luigi-mangione-gray-tribe-manifesto-twitter-brian-thompson-b2663767.html |url-status=live |archive-url=https://web.archive.org/web/20241217004626/https://www.the-independent.com/news/world/americas/crime/luigi-mangione-gray-tribe-manifesto-twitter-brian-thompson-b2663767.html |archive-date=December 17, 2024 |access-date=December 17, 2024 |website=The Independent}}

Mangione showed a skeptical attitude toward both Joe Biden and Donald Trump.{{Cite web |last=Newsham |first=Jack |date=December 10, 2024 |title=Luigi Mangione's deleted social-media posts showed support for Robert F. Kennedy Jr. and skepticism of doctors |url=https://www.businessinsider.com/luigi-mangiones-deleted-social-media-posts-clues-politics-2024-12 |access-date=December 10, 2024 |website=Business Insider |language=en-US |quote=His deleted posts support the idea that his worldview was influenced by reactionary right-wing thinkers. |archive-date=December 22, 2024 |archive-url=https://web.archive.org/web/20241222130710/https://www.businessinsider.com/luigi-mangiones-deleted-social-media-posts-clues-politics-2024-12 |url-status=live}} Multiple sources have reported that he followed Democratic Representative Alexandria Ocasio-Cortez as well as Robert F. Kennedy Jr. and others, labeling him as politically uncategorized and "anti-system."{{Cite web |last=Carroll |first=Leah |date=December 11, 2024 |title=There Are a Lot of Men Like Luigi Mangione |url=https://www.gq.com/story/men-like-luigi-mangione |url-status=live |archive-url=https://web.archive.org/web/20241216034420/https://www.gq.com/story/men-like-luigi-mangione |archive-date=December 16, 2024 |access-date=December 17, 2024 |website=GQ}}{{Cite web |last=McHugh |first=Calder |date=December 12, 2024 |title=The political lessons of Luigi Mangione's media diet |url=https://www.politico.com/newsletters/politico-nightly/2024/12/12/the-political-lessons-of-luigi-mangiones-media-diet-00194163 |access-date=December 17, 2024 |website=Politico}} Time magazine said it could not discern whether his political views were left- or right-wing. The Spectator wrote that his worldview "wasn't pinned to a standard left-right axis."{{Cite web |last=Dee |first=Katherine |date=December 9, 2024 |title=Inside the mind of Luigi Mangione |url=https://thespectator.com/topic/inside-mind-luigi-mangione-unitedhealthcare-killing-suspect/ |url-status=live |archive-url=https://web.archive.org/web/20241209235640/https://thespectator.com/topic/inside-mind-luigi-mangione-unitedhealthcare-killing-suspect/ |archive-date=December 9, 2024 |access-date=December 10, 2024 |website=The Spectator World |language=en-US |quote=Mangione's dissatisfaction had a different inflection. He gravitated toward "traditionalism", a term gaining traction in certain media spaces as shorthand for a certain right-tinged longing: for older aesthetics, more formal courtship rituals, seemingly more authentic ways of life. Think pieces abound about this niche of right-coded thought, which seeks permanence and depth beyond what the digital present seems to offer.}} Jacobin stated he held "a hodgepodge of views and political beliefs that don't neatly map onto any one category on the political spectrum."{{Cite web |last=Marcetic |first=Branko |date=December 10, 2024 |title=Luigi Mangione's Anger Wasn't Neatly Ideological |url=https://jacobin.com/2024/12/luigi-mangione-unitedhealthcare-thompson-ideological |access-date=January 5, 2025 |website=Jacobin}} Maryland's state voter records indicate that Mangione is registered as having no party affiliation.{{cite web |last1=Abou-Ghazala |first1=Casey Tolan, Blake Ellis, Melanie Hicken, Jeff Winter, Yahya |title=Health care CEO shooting suspect was Ivy League graduate who appears to have written about Unabomber online |url=https://www.cnn.com/2024/12/09/us/luigi-mangione-what-we-know-monday |website=CNN |access-date=16 May 2025 |language=en |date=9 December 2024}}

Mangione posted a Goodreads review of "Unabomber" Ted Kaczynski's Industrial Society and Its Future,{{Cite news |last1=Katersky |first1=Aaron |last2=Charalambous |first2=Peter |last3=Margolin |first3=Josh |date=December 10, 2024 |title=UnitedHealthcare CEO shooting suspect inspired by Unabomber: NYPD analysis |url=https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-suspect-inspired-unabomber-nypd-analysis/story?id=116653076 |url-status=live |archive-url=https://web.archive.org/web/20241210210344/https://abcnews.go.com/US/unitedhealthcare-ceo-shooting-suspect-inspired-unabomber-nypd-analysis/story?id=116653076 |archive-date=December 10, 2024 |access-date=December 11, 2024 |work=ABC News}} describing Kaczynski as "rightfully imprisoned" and criticizing his use of violence against innocent individuals. The review was quoted as writing, "Clearly written by a mathematics prodigy. Reads like a series of lemmas on the question of 21st century quality of life", and "It's easy to quickly and thoughtless [sic] write this off as the manifesto of a lunatic, in order to avoid facing some of the uncomfortable problems it identifies [...] but it's simply impossible to ignore how prescient many of his predictions about modern society turned out." The review, which gave the manifesto four out of five stars, also contained a quote the reviewer claimed to have found online. The quote included the lines {{" '}}Violence never solved anything' is a statement uttered by cowards and predators" and "When all other forms of communication fail, violence is necessary to survive."{{Cite news |last=Pulver |first=Dinah Voyles |date=December 9, 2024 |title=4 Stars for the Unabomber: 'Person of interest' in CEO slaying reviewed killer's manifesto |url=https://www.usatoday.com/story/news/nation/2024/12/09/luigi-mangione-unabomber-four-star-review/76868674007/ |access-date=December 10, 2024 |work=USA Today}}{{Cite web |date=December 9, 2024 |title=Who is Luigi Mangione — the man charged with murder of US executive Brian Thompson? |url=https://www.sbs.com.au/news/article/who-is-luigi-mangione-the-man-charged-with-murder-of-us-executive-brian-thompson/0ot67j1lt |access-date=December 10, 2024 |website=SBS News |language=en}}{{Cite magazine |last=Ferguson |first=Malcolm |date=December 9, 2024 |title=The Murky Right-Wing Politics of the Alleged UHC Shooter |url=https://newrepublic.com/post/189162/uhc-united-healthcare-shooter-what-we-know-right-wing-politics |access-date=December 9, 2024 |magazine=The New Republic |issn=0028-6583}}

After his arrest, Mangione quickly emerged as a polarizing figure, described by the Rolling Stone as the "most debated and polarizing murder suspect in recent history". He received significant online support,{{Cite web |last1=Searcey |first1=Dionne |last2=Kliff |first2=Sarah |date=December 11, 2024 |title=Reaction to C.E.O. Killing Exposes Frustrations With Health System |url=https://www.nytimes.com/2024/12/10/nyregion/uhc-shooting-luigi-mangione-brian-thompson.html |access-date=January 5, 2025 |website=The New York Times}} with many celebrating him as a folk hero{{multiref2

|1={{Cite web |last1=Corey Kilgannon |last2=Baker |first2=Mike |last3=Broadwater |first3=Luke |last4=Hubler |first4=Shawn |date=December 9, 2024 |title=Suspect in C.E.O. Killing Withdrew From a Life of Privilege and Promise |url=https://www.nytimes.com/2024/12/09/nyregion/united-healthcare-ceo-shooting-luigi-mangione.html |url-access=subscription |url-status=live |archive-url=https://web.archive.org/web/20241210114728/https://www.nytimes.com/2024/12/09/nyregion/united-healthcare-ceo-shooting-luigi-mangione.html |archive-date=December 10, 2024 |access-date=December 10, 2024 |website=The New York Times}}

|2={{Cite magazine |last=Watercutter |first=Angela |title=The Internet's Obsession With Luigi Mangione Signals a Major Shift |url=https://www.wired.com/story/internet-culture-luigi-mangione-major-shift-fandom/ |url-status=live |archive-url=https://web.archive.org/web/20241210170130/https://www.wired.com/story/internet-culture-luigi-mangione-major-shift-fandom/ |archive-date=December 10, 2024 |access-date=December 20, 2024 |date=10 December 2024 |magazine=Wired}}

|3={{Cite web |last1=Honderich |first1=Holly |last2=Wendling |first2=Mike |date=December 13, 2024 |title=The dark fandom behind CEO murder suspect Luigi Mangione |url=https://www.bbc.com/news/articles/cp8nk75vg81o |url-status=live |archive-url=https://web.archive.org/web/20241217141949/https://www.bbc.com/news/articles/cp8nk75vg81o |archive-date=December 17, 2024 |access-date=December 19, 2024 |website=BBC}}

|4={{Cite web |last1=Ax |first1=Joseph |last2=McKay |first2=Rich |last3=Brooks |first3=Brad |title=Luigi Mangione was charged with murder – then donations started pouring in |url=https://www.reuters.com/world/us/luigi-mangione-was-charged-with-murder-then-donations-started-pouring-2024-12-12/ |access-date=December 20, 2024 |website=Reuters}}

|5={{Cite web |last=Saric |first=Ivana |date=December 10, 2024 |title=How the internet cheered the UnitedHealth shooting suspect as a folk hero |url=https://www.axios.com/2024/12/10/luigi-mangione-unitedhealth-ceo-internet |url-status=live |archive-url=https://web.archive.org/web/20241213112843/https://www.axios.com/2024/12/10/luigi-mangione-unitedhealth-ceo-internet |archive-date=December 13, 2024 |access-date=December 20, 2024 |website=Axios |language=en}}

}} and a modern-day Robin Hood.{{Cite web |last=Samee Ali |first=Safia |title=Could fandom cause jury nullification in Luigi Mangione trial? |url=https://www.newsnationnow.com/crime/fandom-jury-nullification-luigi-mangione-trial/ |website=NewsNation}}{{Cite web |date=2024-12-23 |title=81-year-old man calls accused killer Luigi Mangione 'modern-day Robin Hood' |url=https://www.wtsp.com/article/news/local/pinellascounty/st-pete-man-calls-luigi-mangione-modern-day-robinhood/67-9f937257-a29d-4ca7-af26-6cf7a764198c |access-date=2025-03-23 |website=wtsp.com |language=en-US}} The hashtag "#FreeLuigi" and its variations have been shared over 50,000 times on Twitter by those advocating for his release.{{Cite web |last1=Honderich |first1=Holly |last2=Wendling |first2=Mike |date=December 13, 2024 |title=The dark fandom behind CEO murder suspect Luigi Mangione |url=https://www.bbc.com/news/articles/cp8nk75vg81o |url-status=live |archive-url=https://web.archive.org/web/20241217141949/https://www.bbc.com/news/articles/cp8nk75vg81o |archive-date=December 17, 2024 |access-date=December 19, 2024 |website=BBC}} Images and memes, including one portraying Mangione as a Roman Catholic saint, have circulated online,{{Cite web |last=Farfan |first=Isa |date=December 11, 2024 |title=The Meme Glorification of Luigi Mangione |url=https://hyperallergic.com/974040/the-meme-glorification-of-luigi-mangione/ |url-status=live |archive-url=https://web.archive.org/web/20241224111940/https://hyperallergic.com/974040/the-meme-glorification-of-luigi-mangione/ |archive-date=December 24, 2024 |access-date=December 24, 2024 |website=Hyperallergic |language=en-US}} and items and merchandise in support of Mangione were posted on e-commerce sites such as Etsy and Amazon.{{Cite web |last=Roberson |first=Evan |date=December 10, 2024 |title=The Alleged UnitedHealthcare Shooter Has Merch. A Lot of Merch. |url=https://www.vice.com/en/article/the-alleged-unitedhealthcare-shooter-has-merch-a-lot-of-merch/ |access-date=December 11, 2024 |website=Vice |language=en-US}}{{Cite web |last=Ritzen |first=Stacey |date=December 10, 2024 |title=GoFundMe, Etsy Crack Down on Support of Luigi Mangione, Accused of Killing Healthcare CEO |url=https://www.mensjournal.com/news/gofundme-etsy-luigi-mangione |url-status=live |archive-url=https://web.archive.org/web/20241211184244/https://www.mensjournal.com/news/gofundme-etsy-luigi-mangione |archive-date=December 11, 2024 |access-date=December 11, 2024 |website=Men's Journal}} The support for Mangione extended beyond social media, as public displays of support appeared in forms of street art, graffiti, and signs across various locations,{{Cite web |last=Schmunk |first=Rhianna |date=December 14, 2024 |title=3 reasons behind the unsettling glorification of Luigi Mangione |url=https://www.cbc.ca/news/world/luigi-mangione-tiktoks-glorification-explanation-1.7410769 |access-date=January 1, 2025 |website=CBC}}{{Cite web |last=Bramwell |first=Michaela |date=December 16, 2024 |title=People Are Sharing Pictures Of "Deny, Defend, Depose" Signs And Graffiti They've Seen In Public, And It's Shocking |url=https://www.yahoo.com/news/following-luigi-mangiones-arrest-people-211344738.html |access-date=January 5, 2025 |website=BuzzFeed |via=Yahoo! News}} including a billboard displaying the words "Free Luigi" in Riverside County, California{{Cite web |date=December 12, 2024 |title='Free Luigi Mangione' billboard in California |url=https://www.foxla.com/video/1561566 |access-date=January 5, 2025 |website=FOX 11 Los Angeles}} and a mural depicting Mangione as the Nintendo character Luigi in Seattle.{{cite web |last1=Farfan |first1=Isa |title=Luigi Mangione Street and Protest Art Crops Up Around the World |url=https://hyperallergic.com/977195/luigi-mangione-street-and-protest-art-crops-up-around-the-world/ |website=Hyperallergic |date=30 December 2024 |access-date=January 12, 2025 |archive-date=January 5, 2025 |archive-url=https://web.archive.org/web/20250105142149/https://hyperallergic.com/977195/luigi-mangione-street-and-protest-art-crops-up-around-the-world/ |url-status=live}} Mangione's fellow inmates at SCI Huntingdon in Pennsylvania were heard shouting "Free Luigi" from their cells during a live broadcast interview with NewsNation,{{cite web |last=Jassin |first=Liz |date=12 December 2024 |title=Luigi Mangione's fellow inmates: Free him, 'conditions suck' |url=https://www.newsnationnow.com/banfield/luigi-mangione-inmates/ |url-status=live |archive-url=https://web.archive.org/web/20250119114939/https://www.newsnationnow.com/banfield/luigi-mangione-inmates/ |archive-date=January 19, 2025 |access-date=February 5, 2025 |website=NewsNation}} and groups of people gathered at the courthouses to express their support for Mangione during his court hearings.{{cite web |last=Wise |first=Jenna |date=19 December 2024 |title=Luigi Mangione supporters gather outside Pa. courthouse: 'Murder for profit is terrorism' |url=https://www.pennlive.com/news/2024/12/luigi-mangione-supporters-gather-outside-pa-courthouse-murder-for-profit-is-terrorism.html |access-date=7 January 2025 |website=PennLive}}{{cite web |last=Charalambous |first=Peter |date=24 December 2024 |title='Catalyst': Luigi Mangione's supporters brave 11-degree arctic blast to air healthcare grievances |url=https://abcnews.go.com/US/catalyst-luigi-mangiones-supporters-brave-11-degree-arctic/story?id=117064146 |url-status=live |archive-url=https://web.archive.org/web/20241230041449/https://abcnews.go.com/US/catalyst-luigi-mangiones-supporters-brave-11-degree-arctic/story?id=117064146 |archive-date=December 30, 2024 |access-date=7 January 2025 |website=ABC News}} On February 14, 2025, Mangione thanked the public in his first official statement since his arrest, stating that "the support has transcended political, racial, and even class divisions."

Charlie Warzel of The Atlantic wrote that to some, Mangione is an "expression of the depth of righteous anger present in American life right now, a symbol of justified violence."{{cite web |last1=Warzel |first1=Charlie |title=Luigi Mangione Has to Mean Something |url=https://www.theatlantic.com/technology/archive/2024/12/luigi-mangione-internet-theories/680974/ |website=The Atlantic |access-date=15 May 2025 |language=en |date=12 December 2024}} Following the Thompson killing, anger erupted on social media platforms at Thompson, UnitedHealth,{{Cite magazine |last=Hudak |first=Joseph |date=December 12, 2024 |title=Jesse Welles Eviscerates UnitedHealthcare in New Protest Song |url=https://www.rollingstone.com/music/music-news/unitedhealthcare-song-jesse-welles-protest-song-1235202103/ |url-status=live |archive-url=https://web.archive.org/web/20241219154252/https://www.rollingstone.com/music/music-news/unitedhealthcare-song-jesse-welles-protest-song-1235202103/ |archive-date=December 19, 2024 |access-date=December 31, 2024 |magazine=Rolling Stone |language=en-US}} and the U.S. health insurance system generally, with many praising the killing.{{Cite news |last=Goldman |first=Maya |date=December 9, 2024 |title=UnitedHealth CEO's killing unleashes social media rage against insurers |url=https://www.axios.com/2024/12/05/unitedhealth-brian-thompson-killing-health-insurers-social-media |access-date=December 9, 2024 |work=Axios}} The support Mangione has generated has been connected to the public's often negative view of the American health insurance industry and what many consider to be unfair claim denial practices that inflict harm,{{Cite web |last=Wolfe |first=Rachel |date=15 December 2024 |title=Luigi Mangione and America's Growing Resentment of Corporate Power |url=https://www.wsj.com/business/untangling-americas-love-hate-relationship-with-corporate-power-6d415af4 |access-date=December 23, 2024 |website=Wall Street Journal |language=en-US}}{{Cite web |last=Mirabella |first=Lorraine |date=December 18, 2024 |title=Luigi Mangione murder case draws scrutiny of health claim denial rates, with three of Maryland's top insurers higher than average |url=https://insurancenewsnet.com/oarticle/luigi-mangione-murder-case-draws-scrutiny-of-health-claim-denial-rates-with-three-of-marylands-top-insurers-higher-than-average-2 |url-status=live |archive-url=https://web.archive.org/web/20241224231015/https://insurancenewsnet.com/oarticle/luigi-mangione-murder-case-draws-scrutiny-of-health-claim-denial-rates-with-three-of-marylands-top-insurers-higher-than-average-2 |archive-date=December 24, 2024 |access-date=December 23, 2024 |website=InsuranceNewsNet |language=en-US}} and the case has spurred growing calls for health insurance reform.{{Cite news |last=Weixel |first=Nathaniel |date=December 15, 2024 |title=Will anger at health insurers spur action? Democrats pessimistic |url=https://thehill.com/policy/healthcare/5040261-congress-health-insurance-reform/ |access-date=December 23, 2024 |work=The Hill}} A December 2024 NORC at the University of Chicago poll found that most American adults believe that health insurance companies' denials for health care coverage and/or profits made by those companies share a moderate amount or a great deal of responsibility for Thompson's death.{{Cite web |last1=Sanders |first1=Linley |last2=Murphy |first2=Tom |last3=Thomson-Deveaux |first3=Amelia |date=December 27, 2024 |title=Most Americans blame insurance profits and denials alongside the killer in UHC CEO death, poll finds |url=https://apnews.com/article/luigi-mangione-unitedhealthcare-brian-thompson-shooting-b53fde08980d160ee93fd08b1664108d |url-status=live |archive-url=https://web.archive.org/web/20241228190422/https://apnews.com/article/luigi-mangione-unitedhealthcare-brian-thompson-shooting-b53fde08980d160ee93fd08b1664108d |archive-date=December 28, 2024 |access-date=December 28, 2024 |work=Associated Press News |language=en}}{{Cite web |date=December 12–16, 2024 |title=December Wave 2 2024 AmeriSpeak Omnibus |url=https://www.norc.org/content/dam/norc-org/pdf2024/December-Wave-2-2024-AmeriSpeak-Omnibus.pdf |url-status=live |archive-url=https://web.archive.org/web/20241228062002/https://www.norc.org/content/dam/norc-org/pdf2024/December-Wave-2-2024-AmeriSpeak-Omnibus.pdf |archive-date=December 28, 2024 |access-date=December 28, 2024 |website=NORC at the University of Chicago}}

Regarded as one of the "most polarizing figures in American pop culture," public opinion on Mangione has been mixed. A December 2024 Economist/YouGov poll found that 43% of American citizens held an unfavorable view of Mangione, while 21% viewed him favorably. Support for him was notably higher among citizens aged 18–29 and those identifying as very liberal, while older and more conservative individuals tended to view him unfavorably. Similarly, a December 2024 online poll by the Center for Strategic Politics found that 61% of respondents had a negative perception of Mangione, while 19% held a positive view. They found that opinions on him vary "dramatically" by age, with younger respondents expressing more favorable views than those over 45 and viewing Mangione "far more favorably" than Thompson and UnitedHealthcare.{{Cite web |last=Del Rey |first=Michelle |date=December 14, 2024 |title=Poll: Young Americans favor Luigi Mangione over UnitedHealthcare CEO Brian Thompson |url=https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-ceo-unitedhealthcare-lawyer-karen-agnifilo-latest-b2664635.html?page=5 |archive-url=https://archive.today/20241216002244/https://www.independent.co.uk/news/world/americas/crime/luigi-mangione-ceo-unitedhealthcare-lawyer-karen-agnifilo-latest-b2664635.html?page=5 |archive-date=December 16, 2024 |access-date=December 16, 2024 |website=The Independent}}{{Cite press release |title=In First Poll Released Since Killing, Young Americans Favor Luigi Mangione over UnitedHealthcare & Slain CEO Brian Thompson |date=December 13, 2024 |publisher=Center for Strategic Politics |url=https://stratpolitics.org/2024/12/unitedhealthcare-poll/ |last1=Buchman |first1=Jordan |access-date=December 16, 2024 |url-status=live |archive-url=https://web.archive.org/web/20241214192700/https://stratpolitics.org/2024/12/unitedhealthcare-poll/ |archive-date=December 14, 2024}}

After being transported from Pennsylvania to New York on December 19, Mangione received a highly publicized perp walk, escorted by many heavily armed law enforcement officials and Mayor of New York City Eric Adams.{{Cite web |last=Fitzsimmons |first=Emma |date=December 20, 2024 |title=At Luigi Mangione's Perp Walk, Mayor Eric Adams Appeared Stage Right |url=https://www.nytimes.com/2024/12/20/nyregion/luigi-mangione-eric-adams.html |url-status=live |archive-url=https://web.archive.org/web/20241223034703/https://www.nytimes.com/2024/12/20/nyregion/luigi-mangione-eric-adams.html |archive-date=December 23, 2024 |access-date=December 23, 2024 |website=The New York Times}} Stanford Law School professor Robert Weisberg said: "The FBI and NYDA could have transported Mangione discreetly, but they opted for a public show."{{Cite web |last=Arshad |first=Minnah |date=December 20, 2024 |title=Paparazzi and protesters: CEO shooting suspect's unusual journey to New York City |url=https://www.usatoday.com/story/news/nation/2024/12/19/luigi-mangione-new-york-paparazzi-perp-walk/77094177007/ |url-status=live |archive-url=https://web.archive.org/web/20241220053247/https://www.usatoday.com/story/news/nation/2024/12/19/luigi-mangione-new-york-paparazzi-perp-walk/77094177007/ |archive-date=December 20, 2024 |access-date=December 20, 2024 |website=USA Today}} Some legal experts stated that the perp walk was a "blatant and unnecessary attempt at self-promotion."

Policy director for the Justice Collaboratory at Yale Law School Jorge Camacho said: "In a case like Mangione's, where the suspect has garnered some sympathy and applause from people frustrated with greedy health-care insurance companies, the [perp walk] can backfire."{{cite news |last=Butterfield |first=Michelle |date=December 20, 2024 |title=Luigi Mangione perp walk: Did it garner more support for suspected killer? |url=https://globalnews.ca/news/10927872/luigi-mangione-perp-walk-new-york/ |newspaper=Global News}} Memes in support of Mangione circulated on social media, many of which compared his perp walk to the arrest of Jesus, perp walk scenes from the Superman movies, and Renaissance paintings.{{multiref2|{{Cite web |last=Nadal |first=Emily |date=December 20, 2024 |title=Did the NYPD's perp walk of Luigi Mangione backfire? |url=https://gothamist.com/news/did-the-nypds-perp-walk-of-luigi-mangione-backfire |url-status=live |archive-url=https://web.archive.org/web/20241222132855/https://gothamist.com/news/did-the-nypds-perp-walk-of-luigi-mangione-backfire |archive-date=December 22, 2024 |access-date=December 22, 2024 |website=Gothamist |language=en}}|{{Cite web |last=Simon |first=Ed |date=December 20, 2024 |title=The Canonization of St. Luigi |url=https://hyperallergic.com/977203/the-canonization-of-st-luigi/ |access-date=December 22, 2024 |website=Hyperallergic |language=en-US |archive-date=December 23, 2024 |archive-url=https://web.archive.org/web/20241223043020/https://hyperallergic.com/977203/the-canonization-of-st-luigi/ |url-status=live}}|{{cite news |title=Social Media Users Compare Luigi Mangione to 'Prettier Jesus' After Perp Walk in New York: 'Look Like a 21st Century Martyr' |first=Elizabeth |last=Urban |date=December 20, 2024 |url=https://www.latintimes.com/social-media-users-compare-luigi-mangione-prettier-jesus-after-perp-walk-new-york-look-like-569900 |archive-date=December 21, 2024 |access-date=December 20, 2024 |archive-url=https://web.archive.org/web/20241221031740/https://www.latintimes.com/social-media-users-compare-luigi-mangione-prettier-jesus-after-perp-walk-new-york-look-like-569900 |url-status=live |work=LatinTimes}}|{{cite web |first=Ben |last=Blanchet |title='Don't They Want Us To Hate Him': Social Media Users React To Luigi Mangione's NYC Arrival |url=https://www.huffpost.com/entry/luigi-mangione-officials-escort-new-york-city-arrival_n_67652120e4b0c80cd037ab3b |website=Huffington Post |access-date=December 20, 2024 |language=en |date=December 20, 2024 |archive-date=December 21, 2024 |archive-url=https://web.archive.org/web/20241221031740/https://www.huffpost.com/entry/luigi-mangione-officials-escort-new-york-city-arrival_n_67652120e4b0c80cd037ab3b |url-status=live}}|{{cite web |last1=Huggins |first1=Katherine |title=NYPD roasted over Luigi Mangione perp walk pics: 'How you turn a man into a legend' |url=https://www.dailydot.com/debug/luigi-mangione-perp-walk-nypd/ |website=The Daily Dot |date=December 20, 2024}}|{{cite web |first=Kylie |last=Cheung |date=December 20, 2024 |title=Eric Adams & the NYPD Held a Theatrical Photo Shoot With Luigi Mangione |url=https://www.jezebel.com/eric-adams-nypd-luigi-mangione-perp-walk |website=Jezebel |access-date=December 20, 2024 |archive-date=December 20, 2024 |archive-url=https://web.archive.org/web/20241220210804/https://www.jezebel.com/eric-adams-nypd-luigi-mangione-perp-walk |url-status=live}}}} During Mangione's New York court hearing on December 23, his defense attorney called the perp walk "unnecessary" and "utterly political".{{multiref2|{{Cite web | last1=Reiss | first1 = Adam | last2 = Li | first2 = David | date = December 23, 2024 |title=Luigi Mangione pleads not guilty in killing of UnitedHealthcare CEO on N.Y. state charges |url=https://www.nbcnews.com/news/us-news/luigi-mangione-pleads-not-guilty-killing-unitedhealthcare-ceo-new-york-rcna185215?cid=sm_npd_nn_tw_ma&taid=676979cda23b63000123e0e8&utm_campaign=trueanthem&utm_medium=social&utm_source=twitter |access-date=December 23, 2024 |website=NBC News}}|{{cite web | last1=Fadulu | first1 = Lola | date = December 23, 2024 |title=Mangione Pleads Not Guilty in First N.Y. State Court Appearance |url=https://www.nytimes.com/2024/12/23/nyregion/luigi-mangione-arraignment.html |website=The New York Times |access-date=December 23, 2024}}|{{cite web | date = December 23, 2024 |last1=Gans |first1=Jared |title=Luigi Mangione's lawyer blasts New York officials for 'staged' perp walk |url=https://thehill.com/homenews/state-watch/5053958-mangione-attorney-slams-perp-walk/ |website=The Hill |access-date=December 23, 2024}}}}

Mangione has been noted for his perceived physical attractiveness,{{Cite web |last=Friedman |first=Vanessa |date=December 11, 2024 |title=Luigi Mangione and the Danger of a Handsome Criminal |url=https://www.nytimes.com/2024/12/11/style/luigi-mangione-uhc-social.html |url-status=live |archive-url=https://web.archive.org/web/20241211222518/https://www.nytimes.com/2024/12/11/style/luigi-mangione-uhc-social.html |archive-date=December 11, 2024 |access-date=December 17, 2024 |website=The New York Times}}{{Cite web |last=Makuch |first=Ben |date=December 15, 2024 |title=Rage, race and good looks: the forces behind the lionization of a murder suspect |url=https://www.theguardian.com/us-news/ng-interactive/2024/dec/15/luigi-mangione-unitedhealthcare-shooting |access-date=December 17, 2024 |website=The Guardian}} and Kara Alaimo, writing for Time, stated that he has become "somewhat of an online sex symbol."

After Mangione's Manhattan courtroom appearance on December 23, Maison Margiela trended on Twitter and Threads after social media users misidentified the brand of the burgundy sweater that Mangione was wearing. Users later determined that he was wearing a "washable Merino crewneck sweater" from Nordstrom, which social media users nicknamed 'Mangione Merino,'{{Cite web |last=Mesa |first=Jesus |date=December 26, 2024 |title=Retailers cash in on Luigi Mangione's obsession as sales pick up on merch |url=https://www.newsweek.com/retailers-cash-luigi-mangione-obsession-sales-pick-merch-2006271 |url-status=live |archive-url=https://web.archive.org/web/20241226205337/https://www.newsweek.com/retailers-cash-luigi-mangione-obsession-sales-pick-merch-2006271 |archive-date=December 26, 2024 |access-date=December 27, 2024 |website=Newsweek |language=en}} and quickly sold out.{{Cite web |last=Botelho |first=Renan |date=December 26, 2024 |title=Nordstrom, Maison Margiela Latest Brands Caught Up in Public's Fascination With Luigi Mangione |url=https://wwd.com/pop-culture/culture-news/luigi-mangione-nordstrom-sweater-1236778497/ |access-date=December 27, 2024 |website=Women's Wear Daily|language=en-US}} After his February 2025 court appearance, photographs of Mangione's shackled bare ankles in brown loafers went viral, with the search terms "luigi mangione loafers" and "luigi mangione ankles" spiking by 1,400% and 500%, respectively, on Google.{{cite web |last1=Botelho |first1=Renan |title=Luigi Mangione's 'Loafers,' 'Outfit' and 'Ankles' Go Viral as His Unexpected Fashion Influence Persists After Latest Court Appearance |url=https://wwd.com/pop-culture/culture-news/luigi-mangione-loafers-outfit-ankles-sweater-courtroom-1236968836/ |website=Women's Wear Daily |access-date=13 March 2025 |date=22 February 2025}}{{cite web |last1=Cartter |first1=Eileen |title=Luigi Mangione Went Sockless at His Pretrial Court Hearing |url=https://www.gq.com/story/luigi-mangione-courtroom-loafers-no-socks |website=GQ |access-date=13 March 2025 |date=24 February 2025}}{{cite web |last1=Issawi |first1=Danya |title=Luigi Mangione's Ankles Have Caused a Victorian-esque Frenzy |url=https://www.thecut.com/article/luigi-mangiones-ankles-have-caused-a-victorian-esque-frenzy.html |website=The Cut |access-date=13 March 2025 |language=en |date=24 February 2025}} Regarding Mangione's online popularity, criminologist Diana Rickard told Women's Wear Daily: "What we see with Mangione is he has quickly become a folk hero and a fashion folk hero."

{{notelist|refs=

{{efn|name=NYmurder|The state of New York defines first- and second-degree murder differently than most states. Usually, premeditated murder is first-degree; in New York, it is second-degree, with first-degree being reserved for a premeditated murder with one of a list of aggravating factors. The only possibly applicable one in Mangione's case is murder committed as an act of terrorism. See Murder in New York law.}}

{{efn|name=FedCapitalJury|If convicted, a federal death sentence requires a unanimous jury verdict. If the jury deadlocks on sentencing, it defaults to life imprisonment, even if only one juror is opposed. See {{section link|Capital punishment in the United States|Sentencing}}.}}

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