Israeli police suspect ultra-Orthodox Jews are behind Monday’s vandalism at the Yad Vashem Holocaust Memorial in Jerusalem.

Anti-Zionist graffiti written in Hebrew was sprayed over several parts of the building, with lines like, “Jews, wake up, the evil Zionist regime doesn’t protect us, it jeopardizes us,” and, “If Hitler hadn’t existed, the Zionists would have invented him.”

As implausible as this sounds, many ultra-Orthodox Jews believe that Israel shouldn’t exist until the coming of the Messiah. I myself know one family that subscribes to this belief, although being decent human beings they would never vandalize a Holocaust Memorial.

This is only the latest in a string of controversial incidents involving Israel’s ultra-Orthodox community. Recently vandals seriously damaged a 1,600-year-old mosaic …