I'm half Jewish and I lean left. I have to say, what he's doing is really just against actual leftist thought, because as
>>659064 said, he has a white savior complex. He's an egomaniac. If he really cared at all about bettering the world, he wouldn't be concerned with imposing his views on a foreign culture. That's the imperialist mindset. If he wants to push for those things, the only place he'd be in the right to do it is his own native country and culture, the US. But also, trying to impose his ideological bullshit demonstrates he has no real appreciation or understanding of Japanese culture. So yeah, fuck this idiot.
It's too bad to see some anti-semitism here, but on the race thing, in reality Jews are a nomadic group, and like any nomadic group, they're effectively mixed race. All Jews have some Mediterranean Middle Eastern heritage, at least supposedly (and most actually do). However, it's a pretty small amount. Ashkenazi are mostly Slavic and Germanic. Sephardics are mostly North African (i.e. Berber), Western European, Arab, and nowadays latino. Mizrahi tend to be Arab, Persian, and/or Turkish.
I know explaining stuff is sort of a ban risk, but there were a couple things ITT I wanted to comment on. And yeah, fuck this guy, he seems like a retarded piece of shit.