i mean, the genocide and zionism are two things that make the common jewish person subject of attacks even if they're not supporting "israel", so there's lots of options to ponder about this:

it's a false flag planned by mossad and bibi to get those tasty pity points and smearing supporters for palestine

it was truly a violent muslim fundamentalist poisoned by idpol, thinking that killing random jews will stop the genocide in another part of the world

it was another white boy shooting innocent people guided by /pol/ memes about "da joos" used oportunistically for zionism and "israel"