Columbine High School massacre
Columbine High School massacre: Eric Harris and Dylan Klebold kill 14 people and injure 23 others before committing suicide at Columbine High School in Columbine, Colorado.
20 Nisan — Tarihte Bugün
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20 Nisan 2026 · İngilizce Vikipedi · 49 kayıt · Sayfa 2 / 5
Air France Flight 422
Air France Flight 422 crashes after taking off from El Dorado International Airport in Bogotá, Colombia, killing all 53 people on board.
University of California, Riverside 1985 laboratory raid
University of California, Riverside 1985 laboratory raid: Animal Liberation Front rescues 467 animals being tested in a lab at University of California, Riverside in Riverside, California, causing $700,000 in damages to the laboratory, in advocacy for animal rights.
Apollo program
Apollo program: The Apollo 16 Lunar Module Orion, commanded by John Young and piloted by Charles Duke, lands on the Moon.
Enoch Powell
English politician Enoch Powell makes his controversial "Rivers of Blood" speech.
South African Airways Flight 228
South African Airways Flight 228 crashes near J.G. Strijdom Airport in South West Africa (now Hosea Kutako International Airport in Namibia), killing 123 people.
Cold War
Cold War: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.
Amethyst incident
Amethyst incident: The People's Liberation Army attacks HMS Amethyst (F116) travelling to the British embassy in Nanjing during the Chinese Civil War.
League of Nations
The League of Nations officially dissolves, giving most of its power to the United Nations.
World War II
World War II: U.S. troops capture Leipzig, Germany, only to later cede the city to the Soviet Union.