Hollywood is a CIA asset. It began in 1942. All the great post-war directors in America ((John Ford, Frank Capra, John Sturges, Howard Hawks) all had military posts. They were the starting point for propaganda movies, ideas that were systematized as the 'great American dream' that would replace the fading British Empire. Also please check out Edward Bernays (He was related to Sigmund Freud and used his psychological theories for manipulating human behavior).
Another film recommendation: 'Birth of a Nation' by D W. Griffith made in 1915, a film about the Klu Klux Klan (it has a central role in American Hegelian Dialectic). There's nothing new under the sun.