This volume introduces students to the most controversial incident of the Vietnam War - the My Lai massacre when almost 400 Vietnamese civilians were killed in four hours. The authors discuss the ramifications of the cover-up and the ensuing investigations for the American public, policymakers, the anti-War movement and the soldiers involved. They examine the causes of the massacre and the issues of culpability and human rights. The narrative is built around 70 primary documents drawn mainly from testimony and reports from the government enquiry into the outrage.