In 1919, Soviet Communists created Communist International, also known as Comintern or Third International. The organization’s goal was to infiltrate Western culture with Marxist ideology. The Soviets determined that Hollywood must become a mighty weapon of communist propaganda for the advancement of their Marxist cause. Many Hollywood writers, directors, producers and even some movie stars became committed covert cultural-communist warriors working with Comintern in conveying in their cinema the glory of Stalin's Socialism.
Comintern created a number of Hollywood clubs and organizations, including the New Theater League, Hollywood Anti-Nazi League, and the League of American Writers. These Communist fronts pretended to be pro-American while also infiltrating Marxist anti-American ideas into Hollywood culture.
There were even more brazen overt Hollywood writers, directors, producers and actors who actually joined The Communist Party of the United States of America (CPUSA) and proudly spoke of their membership and dedication to the advancement of the Soviet-Marxist cause. Those who joined became Soviet patriots. Hollywood American members of the Communist Party were dedicated to what they called a Soviet America or the United States of Soviet America (U.S.S.A.).
These Benedict Arnolds of the cinema wanted the triumph of Soviet power in America, and these comrades of the mass murderer Joseph Stalin took marching orders from the Kremlin. The most fanatical among them remained loyal even after the signing of the Hitler-Stalin Pact in 1939 that launched World War II.