Kino Lorber has acquired North American rights to the documentary “The Trials of Muhammad Ali,” which premiered in April at the Tribeca Film Festival.

“Trials” will open in New York on Aug. 23 at the IFC Center with a national rollout following in the late summer and fall.

The doc is a Kartemquin Films production directed by Bill Siegel (“The Weather Underground”). The film follows Ali’s refusal to serve in the Vietnam War, his legal challenges as a conscientious objector, his relationship to the Nation of Islam and his decision to change his name from Cassius Clay to Muhammad Ali.

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The story includes archival footage of his supporters and spiritual leaders including Malcolm X and Elijah Muhammad, as well as opponents of his views such as Jackie Robinson and Joe Louis. The documentary also includes new interviews with his brother Rahman, his wife Khalilah Camacho-Ali, sports journalist Robert Lipsyte and Louis Farrakhan.

“Trials” is produced by Rachel Pikelny and exec produced by Leon Gast, Gordon Quinn, Justine Nagan and Kat White. The deal was negotiated by Richard Lorber and Elizabeth Sheldon on behalf of Kino Lorber and Cinetic Media on behalf of the filmmakers.