Right-wing radio host Sid Rosenberg said he sent a “spy” to attend New York Mayor Zohran Mamdani’s Shavuot celebration at Gracie Mansion, while calling Mamdani “terrorist sympathizing” and accusing him of targeting Jewish New Yorkers.
On Monday night. New York Mayor Zohran Mamdani welcomed reporters and the public into Gracie Mansion for a celebration of the Jewish holiday Shavuot. It was meant to be a moment of Jewish community life at the mayor’s home—an event that. according to Mamdani’s own campaign promises. he would treat with the same protection and respect he said he would offer any religious group.
But the party atmosphere lasted only briefly online for Sid Rosenberg. a right-wing New York radio host who has long made Mamdani a target. Before the event. Rosenberg took to social media to slam the mayor as “terrorist sympathizing. ” and he did not stop at rhetoric. He posted that he was calling out any Jew who chose to attend.
Rosenberg’s message went further than insult. He claimed he had a “spy” at the ceremony. saying the person he sent told him there were “black hats” smiling and enjoying the evening. In the same post. Rosenberg accused Mamdani and Mamdani’s “vile wife” of using timing to “fuck with” Jewish New Yorkers. and he argued Mamdani “purposely” stuck Nakba Day “up all of our Jewish butts.” He also said the mayor scheduled related events “on Shabbat” to “really fuck with us.”.
Rosenberg’s post included a direct warning aimed at the people who went to the mansion. framing attendance as complicity rather than civic engagement: “Any Jew that is at Gracie Mansion tonight celebrating Shavuot with this Radical Islam. terrorist sympathizing Mayor is a disgrace and a fucking sellout!”.
He added that attendees were “the reason why our people are subject to hate and in some cases murder all over the world,” before repeating the claim that he had a spy at the event and that the mansion was “packed tonight.” In his final line, Rosenberg wrote, “I’m literally embarrassed.”
The mayor’s Shavuot event came amid an ongoing fight over Mamdani’s record and language. Critics have labeled him anti-Semitic dating back to before his arrival at Gracie Mansion. pointing to his rhetoric about Israel and related issues. Mamdani has responded to those accusations by vowing during his campaign that he would protect Jewish New Yorkers as he would protect other religious groups.
Rosenberg’s latest attack adds another layer to that conflict, and it’s not his first. Weeks earlier, he accused the New York Mets mascots of being anti-Semites when they appeared in a photo op with Mamdani.
For Mamdani. the question now is whether the confrontation stays confined to politics and protest—or drifts into something more dangerous. Rosenberg’s decision to claim he placed a “spy” at an official community celebration and to call out individual Jewish attendees puts a personal. surveillance-like framing around public religious life at Gracie Mansion—exactly the kind of pressure his critics say they fear from the start.
Sid Rosenberg MAGA radio host Zohran Mamdani Gracie Mansion Shavuot Jewish community Nakba Day New York politics anti-Semitism allegations Israel rhetoric terrorist sympathizing