Of course, we don't have to look too far for examples of Jews killing Jews in Israel and Palestine. Jews were killed in the terrorist bombing of the King David hotel. And Jews (Jewish children, but they weren't of European origin, so who cares, right?) were killed during the eugenically and financially motivated "ringworm experiments". And then, of course, there's the assassination of Yitzhak Rabin.

So I guess the Palestinians don't have any kind of monopoly on that sort of thing.