I Was a Communist for the FBI

Matt Cvetic (Frank Lovejoy) has been infiltrating the Communist Party for the FBI in Pittsburgh for nine years. He has been unable to tell his family about his dual role, so they believe he is a Communist and despise him. He becomes emotionally involved with a Communist school teacher who breaks with the party when it foments a violent strike. Communists are portrayed in the film as cynical opportunists, racists who are interested only in seizing power on behalf of the Soviets.