I get no pleasure from judging someone else as being a racist. I'm sure that I have some prejudices that I hide from my conscious self. I hope that if someone were to point out these prejudices to me, I would at least think about it, and even take steps to fix the problem.

But I have little patience for liars.

There are two tells that indicate lying: "I'm not a racist because..." and "I'm not a racist, but...." Members of the first group may on occasion be trying to figure out what's going on in their psyche. But members of the second group don't want to figure anything out--they just want to validate their prejudices and bigotry, and throw gasoline onto the fire.