I keep thinking about the one friend I have who has racial tendencies, and his son (who goes overboard with it)
VERY religious. Raised in the Deep South, in the 60s. Has his prejudices, but tends to look past them (unless given evidence they're correct). Not only has racial biases, but religious and lifestyle (absolutely HATES gays and Muslims), but doesn't act overtly on them (of course, I've never seen him confronted with a Muslim, so)...
His son idolizes him. And even the father has had to jerk him up short on some of the bias BS (like him asking me if he could borrow my pistol at Starbucks, because he "saw a couple fags"). But still, he seems to have seriously internalized "hatred of the Other"... and lacks the self discipline to control it.
Kinda rambling, trying to get my thoughts to gel on the whole thing. Sorta building on what Liz was saying: that those who were raised with both religious and racial tendencies and reject one, usually reject both. And it seems that, those who DON'T reject them, tend to have stronger feelings on the issue...