My FarLeft person is not old enough to have watched 70 years of anything, although they insist they have studied the issue and it's all one-sided, that Israel is the colonizer and the Palestinians are victims, and what Hamas did pales in comparison to what Israel has done. And it's an entrenched "if you're not with me you're against me" argument, so that any recognition of mutual suffering (or implication that there are any innocent Israelis) is seen as morally wrong.