Mayor Zohran Mamdani was reportedly heckled — by a critic who shouted “every Jewish organization is a target” — while the anti-Israel pol was speaking at a Passover seder event this week. Hizzoner was referencing the recent spike in antisemitism, that he said “has caused enormous pain for so many Jewish New Yorkers,” when the unidentified person shouted from the back of the room Monday night, the Jewish Telegraphic Agency reported. Other attendees at Jewish entrepreneur Michael Dorf’s 33rd