(True joke) In 1960, after winning his olympic gold medal, Muhammad Ali went to eat at a fancy downtown resteraunt.

When the waiter came over Ali asked for a cheeseburger.

Shocked to see a black man sitting in the resteraunt, the waiter announced "We don't serve Negroes".

Ali: "Well I don't eat them either, just give me my damn cheeseburger".