Mamdani scrapped IHRA, kept antisemitism enforcement, and therefore has stripped Israel of the leverage it used to shut debate down. Right, so Zohran Mamdani has just taken office and, with one administrative move, made it impossible for New York’s institutions to keep pretending that antisemitism and the defence of Israel are the same thing — and Israel’s political ecosystem is now stuck dealing with that separation whether it likes it or not. That’s the outcome, and the people most affected aren’t activists on the street, they’re the officials, donors, administrators and lobby groups who relied on a definition to shut arguments down before they started. This matters because nothing else actually moved. Antisemitism enforcement stayed. The Office to Combat Antisemitism stayed. Jewish protections stayed. What vanished was the shortcut Israel liked to exploit, the IHRA definition and the reaction from Israel tells you exactly how much power was tied up in it. So this isn’t just about a mayor reversing an executive order. It’s about a pattern snapping — the moment a line that was meant to stay muddied and blurred gets drawn sharply in policy, holds under pressure, and exposes who was depending on the blur to stay unchallenged for their own purposes. Right, so Zohran Mamdani has come into office on January 1st and signed an executive order that removes New York City’s adoption of the IHRA definition of antisemitism, a device adopted by far too many institutions, marking the importance of Mamdani scrapping it, because he has done it while leaving intact the Office to Combat Antisemitism, hate-crime enforcement, and existing protections for Jewish communities across the city, which is where the story actually starts rather than where most mainstream coverage tries to end it.