Ignorance is not the problem. No where near.
Were the Nazis ignorant? Nah. That's not why he hates Jews.
הלכה בידוע שעשו שונא ליעקב.
However, the Nazis, as well as the Crusaders before them, took advantage of ignorance, and with populistic messages made the Jews the scapegoats for problems that had nothing whatsoever to do with the Jews.
For crying out loud, this idiot is citing Simon of Trent. He actually believes that there's truth to blood libels!!!