Learning about My Lai changed American opinions about the Vietnam War. Was the price of winning the war a price worth paying?
Watch the opening scene of My Lai.
Following the My Lai massacre, during which between 347 and 504 civilians were killed, the story remained largely out of the public eye until the media published Haeberle's photographs in November 1969.
Almost a year before O'Brian's arrival in the same area, a platoon from the American Division had been responsible for the massacre at My Lai.