Martin Garbus' client list spans from Nelson Mandela to Don Imus. He defended comedian Lenny Bruce against obscenity charges and argued for neo-Nazis' right to march in the predominantly Jewish town of Skokie, Illiniois.

Garbus is featured in the new documentary Shouting Fire: Stories from the Edge of Free Speech. The film is directed by his daughter Liz Garbus, and screened at the Sundance Film Festival.

Reason.tv's Ted Balaker caught up with Martin Garbus at the Sundance Film Festival in Park City, Utah.