I notice that there is a widespread assumption that the antisemitism is originating primarily from white supremacists.

Blacks, including progressive blacks can be extremely antisemitic.  Remember Jesse Jackson's comments about h-----s and H----town."  (I don't want to trigger Globe censorship).

Muslims can be quite antisemitic too.  Why assume they will abandon their prejudices once they set foot in the US?

I don't want to single out any one group as being mainly responsible--I just want to point out the naivety or political blinders of the left.