With an antisemitic flag hoist above an NYU celebration and pro-Hamas mobs besieging synagogues and marching through Jewish neighborhoods screaming “Zionism will fail!” and beating up Jews who cross their paths, what are New Yorkers of good will to do? Not just Jews: They’re the target now, but the whole city needs to counter this venom. Well, the whole city except for our mayor, since Zohran Mamdani keeps justifying the haters as “enforcing international law” or “protesting genocide” or