There seems to be a tendency both here and throughout the western world to want to dismiss not just the ideas of racists, but racists themselves. I'm not sure there's a difference here between his viewpoint and the "nature of his thinking." If a racist's ideas are so bad (and they are mostly silly) why bother venturing into personal territory like this? Can't you just accept that this guy had a bad experience, was a legitimate victim, and that affected his views? It just seems like an attempt to delegitimize his views by attacking him personally. He's making terribly baseless arguments, but I don't see the point in trying to dismiss him as a person when his arguments are so easy to dismiss.