Last month, New York City’s Park East synagogue hosted a talk on matters of American Jewish interest, including immigration to Israel.

Outside, a crowd of protesters raged against the event’s Jewish participants, including cries of “we need to make them scared,” “f—king Jewish pricks,” and “globalize the intifada” (a phrase the United States Congress officially recognizes as a call for violence against the Jewish people).

Mayor-elect Zohran Mamdani’s response has been described by some Jewish leaders as “ambivalent” or “hollow.”

It was not ambivalent, and it was not hollow.

Mamdani’s statement was outright terrifying:

The Mayor-elect has discouraged the language used at last night’s protest and will continue to do so … he believes every New Yorker should be free to enter a house of worship without intimidation, and that these sacred spaces should not be used to promote activities in violation of international law.”

(Spokesperson for Mayor-elect Mamdani, November 20, 2025. Emphasis added)

International law?

A lecture at a synagogue violated international law?

To be clear, in addition to being absolutely protected by America’s First Amendment, a talk about Jewish immigration at a synagogue does not even remotely violate any international law, convention, or treaty.

It is well known that the Mayor-elect promised to arrest Israeli Prime Minister Benjamin Netanyahu should he ever visit New York City, supposedly for reasons of “international law.” Ironically, doing so would actually violate both US Federal law as well as several of the very international laws Mamdani claims to uphold — a legal topic I’ve previously discussed in depth.

Yet in this case, the soon-to-be mayor of New York City was not accusing a foreign leader of war crimes: he was accusing Jews.

Not Israeli leaders — Jews. American Jews. New York Jews.

For attending a talk at a synagogue.

Let that sink in for a minute.

While you do, let’s recall Amsterdam, November 2024: the local Muslim population carried out an actual, modern day pogrom against visiting Israeli soccer fans, literally hunting them through the city streets. For hours, the Dutch police were nowhere to be found.

It’s important to note that Amsterdam’s city government speaks about Israel, and treats its local Jews, in a manner starkly similar to Mamdani.

Just one example: Amsterdam police have the right to refuse assignments on moral grounds. One of the assignments police frequently refuse is protecting Jewish sites, including Holland’s National Holocaust Museum. On “moral grounds.” And with the legal support of the government.

The New York City police will soon be under the command of a mayor who accuses American Jews of war crimes. In a city where violent antisemitic attacks have already reached shocking levels, the police are about to become unreliable at best, and perhaps even hostile.

Matters under the mayor’s direct authority, such as police protection, are only the beginning. Dozens of city agencies could be next.

For example, Mamdani has promised to cut New York City’s relationship with Israel’s Technion University via Cornell University. The mayor does not directly control this decision, but he does have the power to appoint members of the board of management of the Roosevelt Island Operating Corporation, which can then force Cornell into decisions against the partnership.

In the coming years, New York City will see dozens of other political appointments, some visible and others subtle, and they will impact every aspect of the City’s culture, education, and safety, for years to come.

So what can we do about it?

To answer that question, one must first understand the scope of the problem.

At a 2001 conference in Durban, South Africa, the Palestinian Authority and its various allies (including Qatar and Iran) launched what later became known as the “Diplomatic Intifada.” Their target was the generation just being born: today’s 18-24 year old cohort. Their timeframe was decades, and their budget was essentially unlimited.

I saw this tsunami of antisemitism fast approaching during the Gaza war in 2009, and I moved to Israel shortly after. But Aliyah is not a viable or attractive option for everyone. I have dedicated my career to doing everything I can to make a meaningful change on an appropriately large scale.

For your part, you can do these things: Be utterly committed to truth at any cost and speak without compromise.

Some Jewish leaders irresponsibly called Mamdani’s statement “ambivalent” or “hollow” instead of what it was: terrifying and malicious. If uncompromising honesty endangers your job, get a new one. If it endangers your place in your community, find a new community. And if it endangers your safety — move. Yes, this takes courage, maybe even sacrifice. Yes, this is blunt, hard, and perhaps even costly advice. Yet the cost of silence will ultimately be far greater. (Remember 1938?)

Raise your children (or your future children) to understand and appreciate the importance of Israel, of Judaism, and of basic respect for truth itself. Teach them to be strong, unafraid, and true to their values. Learning starts at home, values start at home, and it all starts early.

Daniel Pomerantz is the CEO of RealityCheck, an organization dedicated to deepening public conversation through robust research studies and public speaking.