Warren Beatty

John Reed

Diane Keaton

Louise Bryant

Edward Herrmann

Max Eastman

Jerzy Kosiński

Grigory Zinoviev

Jack Nicholson

Eugene O'Neill

Paul Sorvino

Louis Fraina

Maureen Stapleton

Emma Goldman

Nicolas Coster

Paul Trullinger

M. Emmet Walsh

Speaker at Liberal Club

Ian Wolfe

Mr. Partlow

Bessie Love

Mrs. Partlow

MacIntyre Dixon

Carl Walters

Pat Starr

Helen Walters

Eleanor D. Wilson

Mrs. Reed

Max Wright

Floyd Dell

George Plimpton

Horace Whigham

Harry Ditson

Maurice Becker

Leigh Curran

Ida Rauh

Kathryn Grody

Crystal Eastman

Brenda Currin

Marjorie Jones

Nancy Duiguid

Jane Heap

Norman Chancer

Barney

Dolph Sweet

Big Bill Haywood

Ramon Bieri

Police Chief

Jack O'Leary

Pinkerton Guard

Gene Hackman

Pete van Wherry

Gerald Hiken

Dr. Lorber

William Daniels

Julius Gerber

Dave King

Allan Benson

Joseph Buloff

Joe Volski

Stefan Gryff

Alex Gomberg

Denis Pekarev

Interpreter in Factory

Roger Sloman

Vladimir I. Lenin

Stuart Richman

Leon Trotsky

Oleg Kerensky

Alexander Kerensky / Himself - Witness

Nikko Seppala

Young Bolshevik Soldier

John J. Hooker

Senator Overman

Shane Rimmer

MacAlpine

Jerry Hardin

Harry

Jack Kehoe

Eddie

Christopher Malcolm

CLP Party Member #1

Tony Sibbald

CLP Party Member #2

R.G. Armstrong

Government Agent

Josef Sommer

State Department Official

Jan Tříska

Karl Radek

Åke Lindman

Scandinavian Escort

Pertti Weckström

Finnish Doctor

Nina Macarova

Russian Nurse

Jose De Fillippo

Russian Doctor

Andreas La Casa

Little Boy

Roger Baldwin

Himself - Witness

Henry Miller

Himself - Witness

Adela Rogers St. Johns

Herself - Witness

Dora Russell

Herself - Witness

Scott Nearing

Himself - Witness

Tess Davis

Herself - Witness

Heaton Vorse

Herself - Witness

Hamilton Fish

Himself - Witness

Isaac Don Levine

Himself - Witness

Rebecca West

Herself - Witness

Will Durant

Himself - Witness

Will Weinstone

Himself - Witness

Emmanuel Herbert

Himself - Witness

Arne Swabeck

Himself - Witness

Adele Gutman Nathan

Herself - Witness

George Seldes

Himself - Witness

Kenneth Chamberlain

Himself - Witness

Blanche Hays Fagen

Herself - Witness

Galina von Meck

Herself - Witness

Art Shields

Himself - Witness

Andrew Dasburg

Himself - Witness

Hugo Gellert

Himself - Witness

Dorothy Frooks

Herself - Witness

George Jessel

Himself - Witness

Jacob Bailin

Himself - Witness

John Ballato

Himself - Witness

Lucita Williams

Herself - Witness

Bernadine Szold-Fritz

Herself - Witness

Jessica Smith

Herself - Witness

Harry Carlisle

Himself - Witness

Arthur Mayer

Himself - Witness

Miriam Margolyes

Woman with Notebook (uncredited)

John Ratzenberger

Communist Leader (uncredited)

Simon Jones

Louise Bryant's Colleague in France (uncredited)

Jill Goldston

Dancing Woman (uncredited)