There is no way to generalize. There were “righteous Gentiles” who hid their Jewish and those who turned them in. There were schoolchildren who turned on their classmates and ostracized them. I would imagine that once persecution started, it would be self-preservation to at least feel some distrust of neighbors unless they have revealed themselves to be trustworthy. Just to elaborate about after the war, many of the Jews and other minorities were gone although there is now a small but accepted Jewish community in Berlin. In France, I have heard older people who were still embittered about Vichy France. I believe the wounds heal slowly if at all.