Why did Europe hate the Jews so much then?
It goes back a good long way, but I was watching a documentary on London from Rome to the present, and one of the interesting things about the jew population in London was that they were forbidden in England until the King of the Normans brought them in to lend money to Christians.
It seems that Christians of that time, who were Roman Catholics, were forbidden by the Pope to practice usury against other Christians. So, the King brought in the Jews. It solved a huge problem: England, after the Norman conquest, was really cash-poor.
So, the Jews started lending money, and England began to prosper, at least better than it had in the recent past.
But then the Jews started getting very rich, and the King, I forget which one it was at the time, was threatened by their wealth. So, he forced them to leave England. A huge pogrom that brooked the existence of no Jew in England. At that time.
That kind of fear carries forward to today.
The left hates them for their wealth and for showing the US that you can, in fact, pull yourself out of poverty, even in the face of extreme prejudice. It runs counter to their narrative.