Many are totally opposed to Zionism, believing it to be contrary to the Torah.
Don't get the wrong idea about this. They are not opposed to Zionism per say. They believe Jewish sovereignty over the Holy Land can only be established by the Messiah via building the Third Temple.
They want the Al-Aqsa Mosque (the third holiest site in Islam) destroyed and replaced with the Third Temple. Should Netanyahu or his successor carry this out (and start WW3) they would probably proclaim him the Messiah.
The idea of constructing the Third Temple has shifted over the last decade from a marginal fringe movement to a more prominent feature of right wing Israeli religious-nationalist discourse. Which is worrying.