Regulating morality and politics on the screen was as critical from 1939 to 1945, during a period of international crisis, as at any time in American film history. While the Production Code Administration (PCA) patrolled moral barricades, major issues arose about the movies' content and their politics. After the PCA tried to eviscerate films against fascism from 1939 through 1941, the U.S. government decided wartime movies were too important to be left to the moviemakers. Through most of the war, the Office of War Information (OWI), the Roosevelt administration's propaganda agency, engaged in the most systematic governmental effort to regulate content that has been seen in any American medium of popular culture.
Together the PCA, policing morality, and the OWI, guarding politics, regulated the American screen more tightly than at any time in its history. The process yielded improvements in film content in certain areas, evasions and outright falsifications in others, high profits, and few great pictures. The unprecedented collaboration between government and the motion picture oligopoly raised questions that go to the heart of issues about control of the media in a democratic society.