1873: Sultan Barghash bin Said, under British pressure, closes the infamous slave market of Zanzibar in present-day Tanzania

1947: US Secretary of State George C. Marshall outlines the “Marshall Plan” to rebuild Western Europe

1963: A state of siege is declared in Iran, and Ayatollah Khomeini is arrested

1967: Six-Day War begins between Israel and the neighboring Arab states of Egypt, Jordan and Syria

1968: Palestinian Sirhan Sirhan assassinates Robert F. Kennedy, shooting him 3 times and wounding 5 others at the Ambassador Hotel in Los Angeles, California. Kennedy dies the next day.

1981: The AIDS epidemic officially begins when the US Centers for Disease Control reports cases of pneumonia in five gay men in Los Angeles

1984: Indira Gandhi orders an attack on Sikhism’s holiest site, the Golden Temple in Amritsar

Source: Onthisday.com