Zinn supported the G.I. anti-war movement during the U.S. war in Vietnam. In the 2001 film "", Zinn provides a historical context for the 1971 anti-war march by Vietnam Veterans against the War. The marchers traveled from Bunker Hill near Boston to Lexington, Massachusetts, "which retraced Paul Revere's ride of 1775 and ended in the massive arrest of 410 veterans and civilians by the Lexington police." The film depicts "scenes from the 1971 Winter Soldier hearings, during which former G.I.s testified about "atrocities" they either participated in or said they had witnessed committed by U.S. forces in Vietnam.