A racist went to a bar and saw a black man sitting in the corner to himself. Wanting to cause a scene, he announced that he would buy a free drink for everyone in the bar except for the black man.
After he paid for all the drinks, he looked over at the black man who thanked him. Stunned by this, he did it again a day later and got the same response. He then asked the barman why the black man was thanking him, and then he learned the hard truth.