It is interesting how you note that the depictions of African-Americans in television have drastically changed over time. Amos ‘n’ Andy was racist in the extremity of the stereotypes it exhibited. Sanford & Son used negative stereotypes as well, but to a lesser extent. Also, as you write, the characters were successful—unlike the “Kingfish” that ran scams in Amos ‘n’ Andy. Even further beyond those negative stereotypes, the television show The Jeffersons in 1975 depicted a black couple in a high-end city apartment.
The U.S. is still not very integrated, especially the more rural areas, so it is easy to imagine how segregated it was during the middle of the 20th century. With such extreme segregation, white people had little understanding of what it meant to be black other than the television shows they would watch. The depictions of blacks on these shows contributed heavily to the ways white people viewed them in society.
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