I have stood up for Jews since I was a kid, often saying "I'm Jewish" when racists/antisemitic jokes were told and I have been called those things. I've heard people say all kinds of horrific stuff about Jews. In this very thread we have:

"This is definitely made easier by the fact that the arrogance, the endless lawyering, the shady dealings, the greediness, the constant switching between attacking and playing the victim, they all match to a tee the most known historical antisemitic tropes." https://news.ycombinator.com/item?id=48515906

"Large American investment companies that were also both founded by Jewish people. I'm sure it's just a coincidence, though" https://news.ycombinator.com/item?id=48516750