On a slightly related note, a few days ago I passed a black (this detail relevant to the story) homeless guy in the park near my apartment. He said something to me, I ignored him like I always do. (Hey--that park is full of Jehovah's Witnesses. You don't know what you'll get into if you talk back.)
As I passed him, he yelled at me, "You're just jealous because a black man is in the White House! REPUBLICAN!!!"