No. Them chanting "From the river to the sea" and worse is what makes them Hamasniks.

No, it doesn't. I agree that using that phrase expresses gross insensitivity towards Jews, so much so that by the standards of progressives (ie. racist speech is judged by the effects on the minority, not the intent of the speaker) it is certainly anti-semitic. But it doesn't mean they support Hamas. Even the ones that believe that Israel should not exist in its current form (which I believe constitute a minority of college protestors) aren't "Hamasniks," because that doesn't mean they support Hamas - any more than people in Northern Ireland who supported independents from Britain were necessarily supporters of the IRA.

Think so, eh?
You're smart enough not to fall for the BS that the major terror threat in this country are white supremacists.

I'm smart enough to know that horrific physical violence against individual Jews is far more likely to be committed by the folks who fall down the rabbit-hole of generalized anti-semitic conspiracy tropes about the evil of Jews than those who fall down the rabbit-hole of anti-colonialist theory:

en.wikipedia.org - Pittsburgh synagogue shooting