On March 16, 1968, at the height of the Vietnam War, American soldiers killed 504 unarmed civilians in the village of My Lai. After a brief overview of the war and the home front backlash against it, this program seeks to understand the massacre and its aftermath through the interwoven narratives of three U.S. soldiers—radioman Fred Widmer, helicopter crewman Larry Colburn, and photographer Ron Haeberle—who were present on that horrific day. The first participated in the slaughter; the second intervened in it; and the third revealed it to the world. In a Pittsburgh classroom and in present-day My Lai, these deeply scarred veterans tell their unforgettable stories with candor, grief, and insight. Viewer discretion is advised. (53 minutes)