“The Trials of Muhammad Ali”

Muhammad Ali walks through the streets of New York City with members of the Black Panther Party in September 1970.

The documentary “The Trials of Muhammad Ali,” examines Ali’s life outside the boxing ring, beginning with his conversion to Islam and decision to change his name from Cassius Clay to Muhammad Ali. Director Bill Siegel talks about Ali’s role as an activist, his the controversies spurred by his objections to the Vietnam War. “the Trials of Muhammad Ali” opens August 23 at the IFC Center.