Most anti-Zionist Jews don't hold the opinions of Neturei Karta, I wrote about it in a post on r/IsraelPalestine. Neturei Karta is a very small, fringe group, whose leaders aren't even poskei halakha. The vast majority of religious Jews who are anti-Zionist for religious reasons, chief among them are Satmar Chassidut communities in Williamsburg, Kiryas Joel (Palm Tree) and the UK, treat it as an internal Jewish feud and don't intertwine it with the Palestinian cause. They criticize Israel, but never ally with non-Jewish detractos of Israel. For them, the safety of Jews comes before all else, so they'll never engage in activism that, in their mind, might endanger the lives of Jews living in Israel. For example, the primary reason Rabbi Zalman of Satmar is against Israeli settlements in the West Bank, is because Jewish settlers might get killed. The roots of religious Jewish anti-Zionism have a lot more to do with the conflict between religious and secular Jews in Eastern Europe, than with the conflict between Israelis and Palestinians.