Your claim was not the Jews are voting against their interests by voting for Obama, a perfectly defensible position.
It was that “many Jews voted for Hitler.”
That’s what you need to prove, or admit you made it up.
Were you alive in the 30’s? Well I was, and it was common knowledge, at that time, that many German Jews voted for Adolph Hitler. Now that history has completely erased most of what happened then, I didn’t say that 100% of the Jews in Germany voted for Hitler, but many of them did, especially those in business, and those working for them. They honestly thought that Hitler will bring back the greatness of Germany and it’s business class.