We start with a discussion of more anti-semites in our comments sections, and trying to understand what motivates such people. This becomes a discussion of tribes in general, specifically racial ones, and the ways in which dividing society into tribes can have both positive and negative consequences. Just remember: beneath that well-coiffed exterior of yours, there's a horny, bloodthirsty, hooting baboon who needs to be constantly convinced not to kill people and take their stuff.