Dylan Baker

David Dellinger / David Stahl (voice)

Hank Azaria

Abbie Hoffman / Allen Ginsberg (voice)

Nick Nolte

Thomas Foran (voice)

Mark Ruffalo

Jerry Rubin (voice)

Roy Scheider

Judge Julius Hoffman (voice)

Liev Schreiber

William Kunstler (voice)

Jeffrey Wright

Bobby Seale (voice)

Debra Eisenstadt

Mary Ellen Dahl / Waitress (voice)

Ebon Moss-Bachrach

Paul Krassner (voice)

James Urbaniak

Rennie Davis / Richard Schultz (voice)

David Boat

Norman Mailer / Marshal 1 (voice)

Catherine Curtin

Barbara Callender (voice)

Amy Ryan

Anita Hoffman (voice)

Chuck Montgomery

Lee Weiner (voice)

Ted Marcoux

Robert Murray (voice)

Reg Rogers

Tom Hayden / Unidentified Yippie / Marshal 3 (voice)

Roger L. Jackson

Marshal 2 / Reporter 4 / Reporter 6 (voice)

Leonard Weinglass

Self (voice)

Daniel Hagen

Bailiff (voice)

Julián Rebolledo

Reporter 2 (voice) (as Julian Dean)

Christopher Murney

Meany / Oklepek 1 / Reporter 1 (voice)

Jay Potter

Reporter 3 / Reporter 5 (voice)

Walter Cronkite

Self (archive footage)

Allen Ginsberg

Self (archive footage)

Lyndon B. Johnson

Self (archive footage)

Abbie Hoffman

Self (archive footage)

Tom Hayden

Self (archive footage)

Paul Krassner

Self (archive footage)

Bobby Seale

Self (archive footage)

David Dellinger

Self (archive footage)

Jerry Rubin

Self (archive footage)

Richard J. Daley