Racist s***bag. Always was. If I were the kid with the broken arm I would sue him and Temple for compensatory and punitive damages. Punitive damages are almost never warranted but here you have actual malice. Firing is simply not enough.
Just as an aside, I'm white, and all the times I've dealt with him he has been extremely cordial and polite. Obviously, we don't know what goes on in his head, but I don't think he's racist--I think he says some things sometimes that he might wish he didn't, but I don't think there is racism there.
Maybe it's just because he's gone out of his way to be super nice to me in the past, when he certainly didn't have to be.