Ahh. Of course. Most racists don't see themselves as racist. That is often the crux of the matter. And they are so wedded to that belief, there's no point in showing them how they are not.
I think it would be helpful for the discussion on racism if we thought of it as a verb instead of a noun or an adjective. Racism is in the DOING, not in the identity. Identities are always in flux anyway, tho most people think of identity as a firmly fixed matter that doesn't change.
I have an essay in progress about that.