Grigory Zinoviev
The Bryant–Reed story is told in the 1981 film "Reds", starring Diane Keaton as Bryant and Warren Beatty as Reed. Supporting actors include Jack Nicholson as Eugene O'Neill, Maureen Stapleton as Emma Goldman, Jerzy Kosiński as Grigory Zinoviev (one of the Bolshevik leaders), and Edward Herrmann as Max Eastman.