There was an episode of All in the Family where Mike was being his typical smug, paternalistic white liberal self and Lionel called him on it. I don’t remember the context, but it ended up with Lionel saying, “I don’t mind Mr. Bunker, because that’s how he was raised and he doesn’t know any better. You should.” I think Mike might have been throwing around “Uncle Tom,” which I generally find to be an unadvisable thing for a white guy to do. “He’s not a real black!” Bill Maher thinks he can make that kind of judgment.
Here's that episode:
http://www.youtube.com/watch?v=ljl9oexWyX0
Episode title: "The Games Bunkers Play"
The scene you are refering to starts at 10:30