I found an interesting film short from the 1950s called "New Girl in the Office"; it was produced by the "President's Committee on Government Contracts" (which was chaired by Richard Nixon).
I"m not sure what its audience was supposed to be (probably company executvies), but the movie is about the tensions caused by hiring the first nigger secretary in an office building (which they are forced to do because the company receives government contracts, and all such companies must be non-discriminatory).
The film is interesting for several reasons; it shows how our enemies duped white people slowly and surely, presenting a much milder picture, using a light-skinned, perfectly polite and eminently qualified she-boon as the new hire.

http://www.archive.org/details/new_girl_in_the_office_1

http://www.archive.org/details/new_girl_in_the_office_2