The elephant in the room here is that monkey comparisons to blacks sting because, well, blacks look, sound and act kind of like monkeys. Genetically, all humans are descended from monkeys (see Bush II), but we get the sense (and probably DNA would show) that blacks are closer to them. Look at an ape hand, and look at a dark black person's hand... it's like the same thing. Look at a black man's wide nose, and look at an ape's wide nose. Watch a bunch of monkeys get all whipped up, and watch a group of blacks get all whipped up. Compare the long-reach arms of a black basketball player, and an ape at the zoo. Sorry, but there's a similarity there. So, it really pisses blacks off to be called apes or monkeys in a way that it wouldn't if you called them, say, giraffes or gazelles.
Americans still linking blacks to apes | Science Blog
Ohh look the board's white racist chimes in.