On March 16, 1968, American soldiers from Charlie Company were angry about Viet Cong booby traps, frustrated by recent casualties, and still shaken by the Tet Offensive. They took these resentments out on the residents of two hamlets, slaughtering around 500 unarmed women, children, and elderly people in what is known today as the My Lai massacre.

Whether Capt. Ernest Medina directly ordered his men to kill civilians is doubtful, but he certainly let it happen for hours without intervention. This was no short firefight: It was an extended series of rapes and murders. About half the soldiers participated; about half stood aside and refused to actively participate. But hardly anyone tried to help the victims.