ttbomk, the "fear the Jews: they are behind all evil" conspiracist-nationalists do hold such things to be true.
And they are vocal about it, so your not having heard about such things doesn't mean that such assertions are not made.
I was told, a few decades ago, that in Europe the centuries-long sequence went sorta like this:
Jews are farmers
conspiracist-nationalists spread fear about "Jews are taking/owning all our farmland", so therefore..
farmland gets taken away from Jews, which means, that they have to earn a living by other means, so therefore
they become clockmakers, lawyers, doctors, etc, which therefore
creates leverage for conspiracists to assert that they're conspiring & taking all these skilled-work jobs, because it's their world-subjugation program..
etc..
IOW, it doesn't matter what people do: prejudice is going to claim "justification", relentlessly.
Machiavellianism is a mental-illness, or worse, a hardwiring-of-brain.