1921 – The Kronstadt rebellion began following mass protests in Petrograd demanding greater freedom in Russia with sailors and citizens taking up arms against the Bolsheviks.
1978 – As a cosmonaut on Soyuz 28, Czechoslovak military pilot Vladimír Remek(pictured) became the first person from outside the Soviet Union or the United States to go into space.
1853 – Giuseppe Verdi's La traviata premiered at La Fenice in Venice, but the performance was considered so bad that it caused him to revise portions of the opera.
2013 – Cardinal Jorge Mario Bergoglio was electedPope Francis, making him the first Jesuit pope, the first from the Americas, and the first from the Southern Hemisphere.
1309 – On Eid al-Fitr, the citizens of Granada stormed palaces in the city, deposing Sultan Muhammad III and placing his half-brother Nasr on the throne.
1892 – Canadian governor general Lord Stanley of Preston pledged to donate an award to Canada's top-ranked amateur ice hockey club, now known as the Stanley Cup, the oldest professional sports trophy in North America.
1960 – Police in Sharpeville, South Africa, opened fire on a group of unarmed black demonstrators who were protesting pass laws, killing 69 people and wounding 180 others.
2014 – A massive landslide in Oso, Washington, killed 43 people after engulfing a rural neighborhood, the largest death toll for a standalone landslide in U.S. history.
1980 – One day after making a plea to Salvadoran soldiers to stop carrying out the government's repression, Archbishop Óscar Romero was assassinated while celebrating Mass in San Salvador.
1933 – After an on-board fire that may have been the first incident of airliner sabotage, the Imperial Airways biplane City of Liverpoolbroke apart in mid-air, killing fifteen people.
1997 – In the Tragedy of Otranto, the Italian Navy vessel Sibilla collided with the Albanian civilian vessel Kateri i Radës, causing the latter to sink and leading to dozens of deaths.
1930 – To avoid government censorship, Hollywood movie studios instituted their own set of industry censorship guidelines, popularly known as the Hays Code.