Portal:United States/On this day/April 20

{{Portal:United States/On this day/Layout

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|day=20

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• 1657 - Freedom of religion is granted to the Jews of New Amsterdam (later New York City).
• 1775 - American Revolutionary War: the siege of Boston begins, which followed the first battles at Lexington and Concord.
• 1836 - U.S. Congress passes an act creating the Wisconsin Territory.
• 1861 - American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.
• 1871 - Civil Rights Act of 1871
• 1912 - Opening day for baseball stadiums Tiger Stadium in Detroit, Michigan, and Fenway Park in Boston, Massachusetts.
• 1914 - Forty-five men, women, and children die in the Ludlow Massacre during a bitter Colorado coal-miner's strike.
• 1926 - Western Electric and Warner Bros. announce Vitaphone, a process to add sound to film.
• 1945 - World War II: US troops capture Leipzig, Germany, only to later cede the city to the Soviet Union.
• 1945 - World War II: U.S. B-29 bombers destroy the Musashi Aircraft plants, halting production of the Nakajima Ki-84 fighter planes.
• 1961 - Failure of the Bay of Pigs Invasion of US troops against Cuba.
• 1972 - Apollo 16 lands on the Moon.
• 1985 - ATF raid on The Covenant, The Sword, and the Arm of the Lord compound in northern Arkansas.
• 1986 - Professional basketball player Michael Jordan sets all-time record for points in an NBA playoff game with 63 against the Boston Celtics.
• 1999 - Columbine High School massacre: Two gunmen kill 13 people and injure 24 others before committing suicide at Columbine High School located in Jefferson County, Colorado.
• 2007 - Johnson Space Center Shooting: A man with a handgun barricades himself in NASA's Johnson Space Center in Houston, Texas before killing a male hostage and himself.

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