Harvey Milk at City Hall, San Francisco, 1978

Harvey Milk being sworn in as County Supervisor at City Hall, San Francisco, 1978. After two unsuccessful bids for the board of supervisors, in 1973 and 1976, Milk was elected in 1977, becoming one of the country's first openly gay elected officials. He was shot and killed by Dan White in City Hall in 1978. Video from NBC News Archives.