1. After World War 2, American films reflected the nation's post-war fears and anxieties through "social problem films" that examined issues like veterans' economic and social readjustment or racism.
2. As suspicions grew about the Soviets, the HUAC accused Hollywood of producing "un-American" films and blacklisted those who refused questioning, causing fear in the film industry.
3. Science fiction films of the era explored the paranoia of communist subversion through themes of infiltration and invasion, while other films reinforced traditional American values to appease audiences.