Eddie Redmayne as Tom Hayden

Sacha Baron Cohen as Abbie Hoffman

Mark Rylance as William Kunstler

Joseph Gordon-Levitt as Richard Schultz

Frank Langella as Judge Julius Hoffman

Jeremy Strong as Jerry Rubin

John Carroll Lynch as David Dellinger

Yahya Abdul-Mateen II as Bobby Seale

Alex Sharp as Rennie Davis

Noah Robbins as Lee Weiner

Danny Flaherty as John Froines

Ben Shenkman as Leonard Weinglass

Michael Keaton as Ramsey Clark

Kelvin Harrison, Jr. as Fred Hampton

Caitlin FitzGerald as Agent Daphne O'Connor

Alice Kremelberg as Bernadine

J.C. MacKenzie as Thomas Foran

John Doman as John Mitchell

Wayne Duvall as Detective Deluca

Damian Young as Howard Ackerman

C.J. Wilson as Sergeant Scott Scibelli

Brady Jenness as David Dellinger's Son

Meghan Rafferty as Mrs. Dellinger

Juliette Angelo as Juror 6

Brendan Burke as Bailiff

Tah von Allmen as Mrs. Winter

Alan Metoskie as Allen Ginsberg

John Gawlik as Policeman That Arrests Jerry

Kevin O'Donnell as Bar Patron 1

Gavin Haag as Bar Patron 2

Tiffany Denise Hobbs as Sondra

Steve Routman as David Stahl

Madison Nichols as Demonstrator

John F. Carpenter as Detective Bell

Larry Mitchell as Detective Frapoly

Mike Geraghty as Detective Sam McGiven

Mike Brunlieb as Eddie

James Pravasilis as Egg Throwing Crowd Member

Vic Kuligoski as Frat Boy 1

Brandon Fierro as Frat Boy 2

Calvin Ticknor-Swanson as Frat Boy 3

Gabrielle Perrea as Girl in Beret

Michelle Hurst as Housekeeper Jane

Tony Lawry as Man

Kathleen Garrett as Mitchell's Secretary

Matt LeFevour as Officer 1

Christian Litke as Officer 2

Max Adler as Officer Wojohowski

Michael Bassett as Officer Quinn

Shawn Parsons as Policeman in Haymarket

Julian Hester as Policeman on Bullhorn

John Quilty as Reporter Jack

Kate Miller as Reporter Majorie

Edward Fletcher as Reporter Sy

Blair Lewin as Woman in Tavern

Jessica Wood as Bartender

Steven Komito as Marshal

Marco Lama as Someone in the Crowd

Ben Kass as Reporter 7

Gabriel Franken as Reporter 8

Ed Flynn as Reporter 9

Alex Henderson as Young Man

David Fierro as Bailiff 2

Sam Nelson Harris as Band Lead Singer

Marlee Mendelson as Band Member

Hana Chew as Band Member

Ashley Trumbo as Band Member

Allison Trumbo as Band Member

Shane Skidmore as Band Member

Jeffrey Yonkus as Band Member

Maria Jacobson as Band Member

Brendan Brown as Band Member

Dan MacDonald as Band Member

Keeley Morris as Female Protester

Thomas John Gallagher as Radio Cop

Michael A. Dean as Carl Oglesby

Elizabeth Holder as Juror 11

Lex Elle as Riot Cop (uncredited)

Gillian Cooper as Courtroom Protester