RR44,
1. Are you saying that German Jews should not have opposed Hitler ym”s in the last few elections in Weimar Germany? As for leaving the country, polls already stated that. They also said that Hitler would not do everything he said once he was a leader as happens with many politicians.
2. Actually, Rav Chaim Ozer and the Brisker Rav lived in what was then eastern Poland. At first it was under Soviet occupation. The former died before the German attack (which was actually Hitler’s first unbelievable mistake, the second being declaring war on the US). The fact that many gedolim were tragically wrong about not leaving is another discussion.
3. I can think of several past and present leaders who are not outspoken antisemites or even closet antisemites. Trump. Reagan. LBJ. JFK. Macron. Thatcher.
Joseph, what about trolls?