I mean imagine tomorrow you find out your mother was Jewish and you had no idea (or if not you then some other person with your same beliefs who was adopted, whatever). Then what? Do you go about the rest of your life with self loathing? It wasn’t you who committed the crimes of your ancestors. It’s just a matter of probability where you were born and what race you are. It’s all relative. Muslims and Christians have also committed plenty of horrible crimes on humanity over the centuries, depending on the era.