I am a very very lazy person. I like to pride myself on being in the running with Lebowski. And to me hate takes way way to much energy. Having even the simple idea of killing has to take some effort. Kind of seems like he just set out on a life not worth living IMO
IIRC during the third Crusade, the Christians slaughtered 60,000 Jewish people before they even got out of Germany. The beef goes way back.
Some people will say the origin is Christ’s death. But even reading that story it’s clear that Europeans and Israelites weren’t on good terms then either.
It’s hard to find a “cause” for a belief that isn’t rational.
Pogroms were common throughout Europe for hundreds of years. Because Christians were forbidden from lending money at interest Jews were the ones doing the banking.
When a ruler got too far into debt they’d incite some religious hatred and miraculously be out of debt, because their creditors were dead or missing.
“Expelling the Jews” is a mechanic in Crusader Kings 2. And it gets abused like it did historically, too- borrow a shitload of money and then expel the Jews. Suddenly you found free money.
Further, early Jewish Christians were persecuted by the Pharisees and other Jews who were angry with their breaking Moses’ Law. It was probably only natural to gradually amp up the anti-Jewish sentiment as the Gospels were written because there were open beefs happening in daily life.