A knife attack on two men, one wearing a yarmulke, on Manhattan's Upper West Side on Tisha B'Av has sharpened questions about New York City Mayor Zohran Mamdani's rhetoric and his documented connections to organizations linked to the Muslim Brotherhood.
The assailant walked up to the two men, ages 50 and 57, and stabbed them while allegedly shouting "Allahu Akbar," Fox News reported. Both victims survived. Police took a suspect into custody and are examining the motive. No formal hate-crime designation had been announced at the time of publication.
The attack came one day after Mamdani released a video accusing Israel of war crimes and genocide and declaring that Israeli Prime Minister Benjamin Netanyahu should be arrested, a demand the mayor later admitted he has no legal authority to carry out. Municipal leaders are forbidden by law from conducting their own foreign policy, yet Mamdani has made the Israeli-Palestinian conflict a centerpiece of his administration.
Charles Asher Small, founder and director of the Institute for the Study of Global Antisemitism and Policy, argued in the Fox News commentary that Mamdani's pattern of associations, policy moves, and rhetoric traces directly to the Muslim Brotherhood's long-term strategy for political influence in the West. ISGAP published a report on Mamdani in 2025 that examined the origins of his worldview, including his co-founding of a chapter of Students for Justice in Palestine at Bowdoin College.
Mamdani's opening move as mayor was to strip the International Holocaust Remembrance Alliance definition of antisemitism from New York City's official lexicon. He followed that by introducing legislation aimed at punishing New York charitable institutions that support Israel. He accepted a $100,000 donation from the Council on American-Islamic Relations, an organization identified by federal prosecutors as an unindicted co-conspirator in a terrorism-financing case.
Those actions alone would raise eyebrows. But Mamdani has also associated with Imam Siraj Wahhaj, who served as a character witness for the man convicted of masterminding the 1993 World Trade Center bombing. And the mayor has openly endorsed political candidates who, according to Small's analysis, assert that the United States deserved the September 11, 2001, attacks, a claim associated with influencer and Twitch streamer Hasan Piker, described as a close friend of Mamdani.
Mamdani's rise represents the sharpest edge of a progressive insurgency that has reshaped Democratic politics in New York and beyond. National Democratic leaders have struggled to decide whether to embrace or distance themselves from the movement. House Minority Leader Hakeem Jeffries drew criticism for embracing Mamdani-backed democratic socialists after their primary sweep in New York.
When pressed on the slogan "globalize the intifada", a phrase widely understood as a call for violent uprising, Mamdani declined repeatedly to condemn it. He offered only that he would "discourage" its use. For the mayor of the city with the largest Jewish community in the Diaspora, that distinction between condemnation and mild discouragement carries weight.
Small's analysis draws on two internal Muslim Brotherhood documents that were entered as evidence in federal court: "The Project," dated 1982, and the "Explanatory Memorandum," dated 1991. Small described the strategy outlined in those documents as an effort to exploit the freedoms of Western democracies and hollow them out from within, patiently, over generations. The Brotherhood's own authors used the term "civilization jihad" to describe this approach.
Small argued that organizations such as Students for Justice in Palestine and American Muslims for Palestine sit within this broader ecosystem, and that Qatar underwrites much of the network, including front organizations. Hamas itself is the Palestinian branch of the Muslim Brotherhood and is designated by the United States as a foreign terrorist organization.
The progressive coalition that elevated Mamdani extends well beyond New York. A democratic socialist who toppled a 15-term Colorado Democrat refused to back Jeffries for party leader, signaling that the movement's ambitions are national, not local.
Mamdani's treatment of October 7, described by Small as the largest single-day massacre of Jews since the Holocaust, followed a pattern. The mayor downplayed the atrocity while characterizing Israel's military response as genocide. The day before two of his constituents were stabbed on the Upper West Side, he released a video amplified on social media and by mainstream outlets that accused Israel's elected leader of war crimes and called for his arrest.
Mamdani has called for massive demonstrations when Netanyahu visits New York City for the United Nations General Assembly in September. Patrick Hendry, president of the New York City Police Benevolent Association, issued a pointed warning about what that invitation could produce.
Hendry said:
"The mayor's activist posturing puts police officers on the street in a terrible position. Protests during the U.N. General Assembly are nothing new, but when the mayor of the city is actively calling for demonstrations, violent agitators will assume they have permission to cause as much havoc as possible."
That statement lands differently after a man with a knife targeted two people on the Upper West Side, one identifiably Jewish, while allegedly invoking God's name in Arabic. The September demonstrations Mamdani has encouraged will arrive just days before the 25th anniversary of the September 11 attacks.
Establishment Democrats have offered mixed signals about how to handle the party's leftward shift. Bill Clinton shrugged off socialist primary victories, insisting Democrats remain "in good shape", a posture that looks increasingly disconnected from what the movement's leaders actually say and do.
Several critical questions remain unanswered. Police have not publicly identified the stabbing suspect or confirmed a hate-crime designation. The specific legislation Mamdani introduced to target pro-Israel charities, its bill number, its current status, its legal basis, remains unclear in available reporting. And the federal terrorism-financing case in which CAIR was named an unindicted co-conspirator has not been specified in this context.
What is clear is the trajectory. A mayor who removed the internationally recognized definition of antisemitism from city policy, who took six figures from an organization tied to terrorism-financing proceedings, who associates with figures connected to both the 1993 World Trade Center bombing and September 11 apologism, and who calls for street protests against a visiting head of state, that mayor now presides over a city where a man in a yarmulke was stabbed on one of Judaism's holiest days of mourning.
The progressive wing's growing influence has even attracted presidential-level courtship. Vice President Kamala Harris has courted Mamdani and progressive allies as a potential 2028 presidential bid takes shape, a calculation that tells you everything about where the Democratic Party's center of gravity has shifted.
Words have consequences. When the mayor of New York City uses his platform to demonize the Jewish state, strip away antisemitism safeguards, and summon crowds into the streets, he does not get to act surprised when someone with a knife decides to take him at his word.
