NEW: Mayor Zohran Mamdani hits back after Israeli PM Netanyahu singled him out at the UN, telling the mayor "shame on you" and called him out for attempting to "silence" him: "As he has done time and again, Prime Minister Netanyahu used his speech to repeat baseless lies meant to sanitize his genocide of Palestinians." "Yet no lie can change the fact that he remains the subject of an International Criminal Court arrest warrant alleging war crimes and crimes against humanity.”