Dylan Baker
Role: David Dellinger / David Stahl (voice)
Hank Azaria
Role: Abbie Hoffman / Allen Ginsberg (voice)
Nick Nolte
Role: Thomas Foran (voice)
Mark Ruffalo
Role: Jerry Rubin (voice)
Roy Scheider
Role: Judge Julius Hoffman (voice)
Liev Schreiber
Role: William Kunstler (voice)
Jeffrey Wright
Role: Bobby Seale (voice)
Debra Eisenstadt
Role: Mary Ellen Dahl / Waitress (voice)
Lloyd Floyd
Role: Robert Pierson / Arthur Aznavoorian / Police Officer (voice)
Ebon Moss-Bachrach
Role: Paul Krassner (voice)
James Urbaniak
Role: Rennie Davis / Richard Schultz (voice)
David Boat
Role: Norman Mailer / Marshal 1 (voice)
Catherine Curtin
Role: Barbara Callender (voice)
Amy Ryan
Role: Anita Hoffman (voice)
Chuck Montgomery
Role: Lee Weiner (voice)
Ted Marcoux
Role: Robert Murray (voice)
John Rubano
Role: Weaver (voice)
Reg Rogers
Role: Tom Hayden / Unidentified Yippie / Marshal 3 (voice)
Roger L. Jackson
Role: Marshal 2 / Reporter 4 / Reporter 6 (voice)
Leonard Weinglass
Role: Self (voice)
Daniel Hagen
Role: Bailiff (voice)
Julián Rebolledo
Role: Reporter 2 (voice) (as Julian Dean)
Christopher Murney
Role: Meany / Oklepek 1 / Reporter 1 (voice)
Jay Potter
Role: Reporter 3 / Reporter 5 (voice)
Phillip Piro
Role: Oklepek 2 (voice)