On this day, June 20, in 1967

At the height of the Vietnam War, world-renowned boxer Muhammad Ali was convicted of refusing to serve in the U.S. armed forces, and sentenced to five years in prison. Muhammad Ali was stripped of his heavyweight championship and barred from the boxing ring by every state athletic commission in America for three and a half years. Ali also publicly denounced the Vietnam War saying he himself had nothing against the Vietnamese National Liberation Front. Wow, Talk about sacrifice for your beliefs.