Which event led to increased scrutiny of U.S. involvement in Vietnam and policies regarding military action?

The My Lai Massacre significantly impacted public perception and scrutiny of U.S. involvement in Vietnam and military policies. Occurring in March 1968, this tragic event involved the mass killing of unarmed South Vietnamese civilians by U.S. military personnel. As details about the massacre emerged, they sparked outrage across the United States and raised critical moral questions regarding the conduct of the U.S. military in Vietnam.

This event became a turning point, leading to widespread anti-war protests and calls for accountability concerning military actions. The shocking nature of the My Lai Massacre intensified debates about U.S. strategies and the ethical implications of the Vietnam War, ultimately shifting public opinion against the war and prompting an examination of U.S. foreign policy. It highlighted the need for greater oversight and transparency in military engagements, influencing future discussions on U.S. involvement in conflicts abroad.