In the 1960s, as the Civil Rights movement was gaining momentum, a young boxer named Cassius Clay powered his way onto the sports page. After aligning himself with the Nation of Islam and changing his name to Muhammad Ali, his status changed from boxing superstar to American legend. Along with his conversion to Islam came a choice to refuse to serve in the Vietnam War, a decision that would touch off a hard-fought legal battle with the US government. More than a boxing film, this rousing documentary confronts issues of race, faith, politics and identity at a time when Americans faced jail time for standing up for their beliefs. In Person: Director Bill Siegel.