In discussing Communists in Hollywood one needs to look at the American labor movement. Unions had been a small part of the work force in the United States until the 30ths. During the New Deal first the NRA and then the Wagner Act made organizing large unions possible in all American industries.

The large union were members of the American Federation of Labor (AFL) which was principally made up of craft unions Carpenters, Teamsters, et al. Some people wanted to organize whole industries like steel and automobiles. The more conservative members of the AFL were opposed and whole industries organizers left AFL and formed the Congress of Industrial Organizations. One of the leading sources of organizers were the Communist Party.

In Hollywood these organizers created unions principally the Screen Writers Guild. While not all of the members of the Screen Writers Guild were Communists many members of the board of directors were. Not all screen writers in Hollywood were members of the Guild there was some opposition, an example would be the writer Murrey Rsykind who wrote the screen play for "A Night at the Opera". Mr Rsykind was a friend of Ayn Rand.

The Hollywood Communists faithfully followed the party line so opposed the American entry in World War II until the Nazis invaded the USSR. The Hollywood Communists supported the second front in Europe which if it had been attempted would have lead to many American dead and wounded.

Opposition began to form both inside and outside Hollywood. In Hollywood the opposition was an organization called the Motion Picture Alliance for the Preservation of American Ideals. Some of the organizers included King Vidor, Walt Disney. John Wayne, and Ward Bond. One of the early members was Ayn Rand who had just written The Fountainhead. One of the principle items fueling the opposition was movie called Mission To Moscow which was based on memoirs of the worst person to ever serve as an American ambassador Joseph Davis. The book was awful but the movie was worst.