American Revolutionary War: The war begins with an American victory in Concord during the battles of Lexington and Concord.
Venezuela achieves home rule: Vicente Emparán, Governor of the Captaincy General is removed by the people of Caracas and a junta is installed.
American Civil War: Baltimore riot of 1861: A pro-Secession mob in Baltimore attacks United States Army troops marching through the city.
World War II: In Poland, the Majdan-Tatarski ghetto is established, situated between the Lublin Ghetto and a Majdanek subcamp.
Sierra Leone becomes a republic, and Siaka Stevens the president.
India's first satellite Aryabhata launched in orbit from Kapustin Yar, Russia.
The Simpsons first appear as a series of shorts on The Tracey Ullman Show, first starting with Good Night.
Fidel Castro resigns as First Secretary of the Communist Party of Cuba after holding the title since July 1961.
Boston Marathon bombing suspect Tamerlan Tsarnaev is killed in a shootout with police. His brother Dzhokhar is later captured hiding in a boat inside a backyard in the suburb of Watertown.