July 23, 1930
Period of racial violence in Watsonville, California
Disturbances, strikes and riots in British Caribbean colonies, 1934–1939.
1930 British Empire Games — multi-sport event in Hamilton, Canada
Communal riots in Vellore
Salt March — Indian independence movement event led by Mahatma Gandhi
Tintin in the Land of the Soviets — First story of The Adventures of Tintin
Vinnytsia massacre — mass execution in Ukraine
Comfort woman — military sexual slavery system designed and implemented by Japan Empire from early 1930s until the end of World War II, or the victims who were forced into sexual slavery by the Japanese military
3rd Chess Olympiad — FIDE chess tournament for national teams
Anti-Hindu communal violence involving loot and arson