He's said things before that have lead me to that likelyhood. I'm pretty sure he actually thinks he's just anti-Zionist. Left leaning racists (normally) have a much harder time admitting it to themselves, at least when compared to right leaning racists.
I completely disagree. He has expressed himself very strongly against the State of Israel and often its existence, but he has never made statements against the Jews themselves. Accusing others of false Antisemitism is an overused and useless tactic.