Supporting the existence of Israel, and supporting its policies and its current descent into fascist madness, are two entirely different things. Even in, say, 1943, lots of people supported Germany - just not its government.
The real facts are that far greater percentage of US Jews are active in their support for Palestinian freedom than are white “Christians”. Practically every prominent non-Arab organizer for justice in Palestine is a Jew - Abby here on CD for example.
And take your “world Jewery” canard and shove it up your anti-Semitic ass. We have enough anti-Semitism on the neofascist right without having to deal with it on the left.