People aren't animals, though. They can take responsibility for their own decisions.
Also, where do you draw the line? You could take the same argument the other way around and claim Israel doesn't actually commit war crimes. It's because most of them are Jewish and they have been mass murdered multiple times throughout human history. They are now just fighting tooth and nail for having a safe place at least once in history.
It doesn't work to be on one side if people want to resolve this conflict. Unless you literally want the other side to be completely annihilated.