The irony is:
If I wrote what I wish would happen to this “student,” I’m the one who’d be arrested.
What I will say, is:
As you had guessed.
People — not all of them jerks (see, “Prager, Dennis”) — talk a lot about Jews belonging to Marxist movements in disproportionate numbers.
PS: Jonah Goldberg cited The Pink Swastika in Liberal Fascism. If you don’t approve of that source material, take it up with him, too.