In the 70s? Every single fucking one of them, except for The Jeffersons.
And that was the whole concept behind The Jeffersons. A black couple living in a nice condo... WHAAAA? What wacky hijinx! The lyrics to the Jeffersons theme song are about "Hooray, we don't have to live in the ghetto!" and nothing else. Their maid was black though.. a white maid would have been too controversial, seriously.
Contender for worst cartoon? Watch a few Syncro-Vox (tm) shows and Rickety Rocket will seem like Disney's Beauty And The Beast. Haven't heard of Syncro-Vox? Watch this
Oh come on! Space Hoopty, anyone? http://www.imdb.com/title/tt0115206/
I saw this reran on Cartoon Network. I think they were in a haunted space station and Rickety kept crying COOSSMMOOO in true Step n' Fetchit manner. It's worse than you can imagine.