Once again haredim held massive, violent demonstrations over the opening of a parking lot on Shabbat near the Old City. Somehow, some bizarre rabbinic dispensation allows haredi radicals to launch their own unholy war on Shabbat, desecrating it by rioting. Other controversies regarding conversion and appointing Zionist chief rabbis for Jerusalem feed perceptions of a "religious-secular" divide. Actually, the push for a Zionist chief rabbi proves this is not a religious-secular issue but a clash pitting violent haredi radicals against patriotic Zionists. In this struggle, Orthodox Jews from around the world and Religious Zionists in Israel must stand strong. Those two (overlapping) communities must send a clear message to the haredi radicals, saying "back off." The message must be reinforced by religious Zionists fighting for quality of life in the State of Israel as ardently as many fight for every inch of the Land of Israel and by Orthodox Jews threatening to cut off donations to all haredi institutions if haredi violence persists. It is difficult to quantify how much money flows from Orthodox Jews abroad to haredi institutions here, but anecdotal evidence suggests it is considerable. Imagine if those legendary Orthodox Jewish visitors who love to visit yeshivot in Mea She'arim and ask how much it costs to feed the kids lunch, then donate a week of lunches, changed their tunes. What if they said, "We would love to donate, but first reassure us that your community had nothing to do with the recent violence." What if others specifically targeted those rabbis and yeshivot who have been acting like hooligans and cut off the money spigot from Brooklyn and the Five Towns, from Paris and London, from Melbourne and Cape Town? This money message should accompany a moral message from rabbis and leading authorities throughout the Diaspora and Israel. Rabbinic authorities with impeccable religious pedigrees must denounce haredi extremists. LEAVING THE FIGHT to so-called "secular" Israelis exacerbates tensions. Alternatively, if religious and non-religious Jews stood together in this struggle, even while agreeing to disagree on other issues, it would reduce Israel's growing polarization, wherein a Right-Left divide on security increasingly parallels a religious-secular divide regarding lifestyle, philosophy, pluralism and tolerance. Orthodox and religious Zionist rabbis who are so pure of heart they dismiss all this as "politics" and beneath them ignore the conflict's religious dimensions. Anyone who prays for the State of Israel, says Hallel, the prayer of thanksgiving, on its birthday, or speaks about it as a "redemption" or "salvation" cannot stand idly by while hooligans threaten "to set the whole country... on fire." Moreover, for decades now religious Zionists and Orthodox Jews have been in denial about how much harm religious extremists do to those of us laboring to bring the masses of alienated Jews back to Judaism. Taliban Judaism does not work in the modern world. The all-or-nothing, command-and-control approach of the haredim and (I am sorry to say) of much of the Israeli rabbinate alienates millions. Awash in freedom, most Jews today have to embrace Judaism voluntarily. This is not an argument for watering down Judaism. Rather, it is an argument for focusing on its essential positive messages, as the Lubavitcher Rebbe taught, and avoiding desecrations through violence or political coercion. UNFORTUNATELY, TOO many Orthodox Jews and religious Zionists are not just bystanders to haredi and rabbinic extremism but enablers. Too many fear the extremists. This cowardice comes from a brand of religious one-upsmanship extremists the world over have mastered. People from the center, no matter how passionate or pure, end up having their credentials questioned by the ayatollahs in religion and the commissars in politics. Too many modern Orthodox Jews and religious Zionists act insecure when amid their more radical brethren. Radicals are more radical, not necessarily more authentic. Nevertheless, modern Orthodox families in North America send their kids (as well as their cash) to "learn" in yeshivot that are far to their Right. We also see Diaspora communities held hostage on matters of kashrut certification by the most extreme forces. In Israel, the mainstream religious voices refuse to take on the violent haredim. Fortunately, some heroes have emerged. In Jerusalem, Rachel Azaria of Hitorerut-Yerushalmim (the Wake-up Jerusalemites party) has been an important force for change. A religious Zionist activist, Azaria led an insurgent grassroots campaign and ended up on the city council. She and her party have organized demonstrations demanding a Zionist chief rabbi for Jerusalem. They support Mayor Nir Barkat's attempts to find a compromise on the Shabbat parking lot issue that will serve non-religious Jews seeking to visit the capital on Israel's one full weekly day off. Others, like the Tzohar rabbis, have sought to be, as their slogan celebrates, a bridge between the two worlds, giving non-religious Israelis more user-friendly rabbis when marrying, divorcing and celebrating a circumcision or bar mitzva. In North America, Yeshiva University's Center for the Jewish Future has run programs training Israeli rabbis in the kind of pastoral duties too many neglect because they are deployed by the Chief Rabbinate and not beholden to congregants. Still, in the face of haredi violence, the religious story has been much more one of the "silence of the (kosher) lambs." Orthodox and religious Zionist cowardice does tremendous harm. We need mainstream religious rabbinic authorities in Israel and the Diaspora to confront the haredi bullies and repudiate violence, especially on Shabbat, with words and deeds. The writer is professor of history at McGill University. He is the author of Why I Am a Zionist: Israel, Jewish Identity and the Challenges of Today and Leading from the Center: Why Moderates Make the Best Presidents. He splits his time between Jerusalem and Montreal.