1991: A riot breaks out in the Mt. Pleasant section of Washington, D.C. after police shoot a Salvadoran man.
1987: Iran-Contra affair: Start of Congressional televised hearings in the United States of America
1985: Bitburg and Bergen-Belsen: Ronald Reagan visits the military cemetery at Bitburg, Germany, and the site of the Nazi concentration camp, Bergen-Belsen, where he makes a speech.
1981: Bobby Sands dies in the Long Kesh prison hospital after 66 days of hunger-striking, aged 27.
1973: Secretariat wins the 1973 Kentucky Derby in 1:59 2/5, an as-yet unbeaten record.
1972: Alitalia Flight 112 crashes into Mount Longa near Palermo, Sicily, killing all 115 aboard, making it the deadliest single-aircraft disaster in Italy.
1945: World War II: Six people are killed when a Japanese fire balloon explodes near Bly, Oregon. They are the only Americans killed in the continental US during the war.
1945: World War II: The Prague uprising begins as an attempt by the Czech resistance to free the city from German occupation.
1944: German troops execute 216 civilians in the village of Kleisoura, Greece.
1941: Emperor Haile Selassie returns to Addis Ababa; the country commemorates the date as Liberation Day or Patriots' Victory Day.
1940: World War II: Norwegian Campaign: Norwegian squads in Hegra Fortress and Vinjesvingen capitulate to German forces after all other Norwegian forces in southern Norway had laid down their arms.
1940: World War II: Norwegian refugees form a government-in-exile in London.
1905: The trial in the Stratton Brothers case begins in London, England; it marks the first time that fingerprint evidence is used to gain a conviction for murder.
1891: The Music Hall in New York City (later known as Carnegie Hall) has its grand opening and first public performance, with Tchaikovsky as the guest conductor.
1835: The first railway in continental Europe opens between Brussels and Mechelen.
1821: Emperor Napoleon dies in exile on the island of Saint Helena in the South Atlantic Ocean.
1811: In the second day of fighting at the Peninsular WarBattle of Fuentes de Oñoro the French army, under Marshall André Masséna, drive in the Duke of Wellington's overextended right flank, but French frontal assaults fail to take the town of Fuentes de Oñoro and the Anglo-Portuguese army holds the field at the end of the day.
1809: The Swiss canton of Aargau allowed citizenship to Jews.
1809: Mary Kies becomes the first woman awarded a U.S. patent, for a technique of weaving straw with silk and thread.
1789: In France, the Estates-General convenes for the first time since 1614.
1762: Russia and Prussia sign the Treaty of St. Petersburg.