That show the intent of Hollywood studios to promote Jim Crow and white supremacy in film/media. There are also studies on the effects of these messages on white people and people of color.

http://www.jimcrowhistory.org/resources/lessonplans/hs_es_popular_culture.htm
http://www.jimcrowhistory.org/history/history.htm

Jan Nederveen Pieterse wrote an interesting book called White on Black: Images of African and Blacks in Western Popular Culture. This supports the site/info on Jim Crow History.

Also, http://www.accel-team.com/pygmalion/ is an example of the effects of self-fulfilling prophecy in business and education.