On Monday, May 13, 1985, a Pennsylvania State Police helicopter dropped two bombs on a Philadelphia house where members of the MOVE black liberation organization lived. The resulting fire grew out of control, resulting in the deaths of 11 people, including five children, and the destruction of 65 area homes. An independent investigation of the event heaped criticism on the city’s administration and at least for a time earned Philadelphia an unwanted reputation as “the city that bombed itself.”
Sources:
progressiveissuesblog 