I think what Viliam_Bur is trying to say in a rather complicated fashion is simply this: humans are tribal animals. Tribalism is perhaps the single biggest mind-killer, as you have just illustrated.

Am I correct in assuming that you identify yourself with the tribe called "Jews"? For me, who has no tribal dog in this particular fight, I can't get too worked up about it, though if the conflict involved, say, Irish people, I'm sure I would feel rather differently. This is just a reality that we should all acknowledge: Our attempts to "overcome bias" with respect to tribalism are largely self-delusion, and perhaps even irrational.