You may be surprised, especially when it comes to Zionism. This might get me in real trouble with any reform Jewish comrades lurking in here, so let me caveat it by saying that there are anti-Zionist reform congregations in the US that do great work support Palestine.

Because Reform Judaism stripped itself of all content of the traditional Jewish religion, it essentially evolved into a a denominational religion with its only difference with Protestant Christianity being essentially a “national” one. Couple that with the fact that it was created as a version of Judaism for rich, assimilated, German Jews, and it is pretty easy to figure out why some of the most radical Jewish Zionists emerge from reform synagogues. Compare that to Haredi Jews that get posted on here frequently meeting with Palestinian leaders, getting called “monsters” by white American Zionists for protesting the state of Israel, etc and it is easy to conclude that, yes, many Haredi Jews do have better praxis. They also have the advantage of deeply understanding what Judaism is and is not (or at least being taught it) whereas reform Jews (who are, basically by definition, assimilated westerners either living in or directly tied to the economy or the imperial core), unless they happen to have been raised in a radical leftist congregation (they exist), may have never been even presented with the basic facts of the connection (or lack thereof) of the religion they subscribe to and Zionism.

But if you are a real leftist, the support for the Haredi Jews must remain critical support. Even if they come down on the side of the anti-Zionists, they still grapple with and are dominated by highly reactionary viewpoint especially in regards to women. But that is like normal religious tension that you see in Muslim and Christian communities as well.