1966-1967: Vietnam War controversy
Despite failing the U.S. Armed Forces qualifying test in 1964, Ali was reassessed in 1966 and drafted into the military to fight in the Vietnam War. Ali publicly refused to serve, saying that he was conscientious objector and famously remarking: "I ain't got no quarrel with them Viet Cong ... They never called me n*gger". As a result, he was arrested, banned from boxing and stripped of his titles in 1967. The conviction was not reversed until 1971.