Muhammad Ali talks with the press after winning back the Heavyweight Championship for an unprecedented third time by beating Leon Spinks at the Super Dome in New Orleans, LA. Sept. 15, 1978. (Courtesy of Michael Gaffney)

At an early age he identified himself as “The Greatest” and backed up his words inside and out of the boxing ring. Filmmaker Ken Burns joins “Black Voices” to discuss the sweeping new four-part documentary “Muhammad Ali.”

On Sunday, PBS airs part one of a sweeping new four-part documentary on the life and legacy of Muhammad Ali. (PBS / Florentine Films)

He was bigger than boxing and larger than life — a true icon of the 20th century. Filmmaker Ken Burns and Donald Lassere of the Chicago History Museum join us to discuss the sweeping new four-part documentary on the life and legacy of Muhammad Ali.

The Chicago History Museum (WTTW News)

After helming the Muhammad Ali Center in Louisville for many years, the South Side native has returned to the city to lead the Chicago History Museum. Donald Lassere joins us to talk about expanding the museum’s mission to all of Chicago.