What is the mainly reason Hitler didn like Jewish and killed thousands of them?
Much of Germany suffered from severe economic problems after World War I, and many Germans were looking for someone to blame. Hitler picked on the Jews primarily because many businesses that managed to survive the First World War happened to be owned by Jews, and that created a division of wealth. And, since Hitler needed the German people to be united against a common enemy, he pointed them against the Jews. As for Hitler having Jewish blood in them, I don’t think that has ever been conclusively proven. As I understand it, “Jewishness” is passed through the mother’s line, so if your mother isn’t Jewish then you aren’t Jewish (unless you “convert”).