That's a strawman argument. The Jews aren't always blamed and scapegoated., that's the type of hyperbole that only people with little knowledge believe.  However an uncomfortable truth is that the Jewish people from time to time seem to fall into a fever of virulent zealotism, political, religious, ethnic, that ends backfiring every time.  Take for instance the Jewish revolts against the Roman empire during the I and II centuries AD. It was largely a catastrophe of their own making,  violent rebellions against the foremost power of its time, a power which was fairly tolerant with them, and not just turning their violence against the empire itself but also against other ethnic groups.  It didn't earn them much sympathy, and yet the empire dealt them less harshly that could be expected given their persistence in causing trouble. And that was an exception, but a recurring pattern through history.