Mamdani’s “Unthinkable” 9/11 Act? The Viral Graphic Leaves Out a Crucial Detail

A viral graphic claims New York City Mayor Zohran Mamdani “did the unthinkable” during a 9/11 ceremony, implying that the mayor made a shocking gesture at the actual Ground Zero memorial on the 25th anniversary of the attacks.

There was a controversial incident involving Mamdani, a ceremonial 9/11 pen and his chief counsel, Ramzi Kassem. But the graphic significantly distorts when and where it happened, and its photograph does not accurately document the event.

Verdict: MISLEADING — the underlying controversy is real, but the graphic presents it as something that happened during the Sept. 11 Ground Zero ceremony when it actually occurred a week earlier at City Hall.

What actually happened

On September 4, 2026, one week before the 25th anniversary of 9/11, Mamdani held a ceremony at New York City Hall to sign two executive orders.

The first established September 11 as an annual citywide Day of Remembrance and Service. The second updated New York City's emergency-continuity and preparedness policies, which the administration said had not been comprehensively updated in nearly two decades.

Mamdani's remarks were explicitly about remembering the victims and first responders.

He described 9/11 as a “horrific act of terror,” spoke about families who continue to grieve and praised New Yorkers who worked at Ground Zero in the aftermath. FDNY Commissioner Lillian Bonsignore and NYPD Commissioner Jessica Tisch also spoke about the firefighters and police officers who died or later became ill.

Then came the moment that triggered the controversy.

After Mamdani signed the final executive order, he handed the ceremonial pen to NYPD Commissioner Jessica Tisch and asked her, “Can you pass this?” Tisch then passed the pen to Mamdani's chief counsel, Ramzi Kassem.

That handoff was quickly circulated online as an offensive symbolic gesture.

Why Ramzi Kassem became the focus

Kassem is not simply a political aide. He is a law professor and civil-rights attorney who previously represented Guantánamo detainees.

Most notably, Kassem represented Ahmed al-Darbi, beginning in 2008. In a 2017 military-commission proceeding, Kassem himself told the commission that he had represented al-Darbi since 2008 and acknowledged that al-Darbi had pleaded guilty and accepted responsibility for his actions in 2014.

The U.S. Office of Military Commissions says al-Darbi pleaded guilty to offenses including terrorism and attacking civilians and civilian objects relating to the 2002 bombing of the M/V Limburg, an oil tanker off Yemen.

That history is the reason critics objected to Kassem receiving a pen used to sign orders commemorating September 11.

But an important distinction is often lost in viral posts:

Kassem was al-Darbi's defense lawyer. He was not himself an al-Qaeda operative or a participant in the attack.

Representing an accused or convicted person as a defense attorney is not evidence that the lawyer shares the client's ideology or criminal conduct.

Was the gesture deliberate?

This is where the viral framing becomes much more speculative.

Critics have characterized the pen handoff as intentional disrespect toward 9/11 victims. Some commentators have described it as a “slap in the face” or suggested that Mamdani deliberately used the ceremony to send a political message.

But there is no established evidence that Mamdani intended such a message.

The mayor's office said Kassem received the pen because Kassem and his team had drafted the two executive orders being signed.

That explanation can certainly be debated politically. Critics are free to argue that Mamdani should have anticipated the optics. But that is different from proving that the gesture was an intentional tribute to, endorsement of, or signal to al-Qaeda.

The biggest problem with the viral graphic: the date

The graphic says:

“During 9/11 Ceremony”

That wording strongly suggests the incident occurred during the September 11 Ground Zero memorial ceremony.

It did not.

The pen handoff happened at City Hall on September 4, seven days before the anniversary.

On September 11 itself, Mamdani did attend the actual 25th-anniversary ceremony at Ground Zero.

And the atmosphere was considerably different from what the graphic suggests.

CNN reported seeing Mamdani among the dignitaries arriving at the memorial, alongside the Clintons, Bushes, Bidens and Obamas. CNN also captured Mamdani shaking hands with former Mayor Rudy Giuliani.

Reuters likewise described the Ground Zero commemoration as a solemn ceremony attended by family members and national political leaders.

There is no credible evidence that Mamdani repeated the controversial pen handoff at Ground Zero.

The picture itself is another problem

The photograph used in the graphic does not establish that the scene occurred at the September 11 memorial.

In fact, the widely circulated image associated with Mamdani speaking in a black jacket has been traced to a Resist Fascism rally in Bryant Park on October 27, 2024, according to the original Wikimedia Commons record.

Actual 2026 photographs from Mamdani's 9/11-related events show very different settings, including the September 9 dedication of the new 9/11 Memorial Wall at One Police Plaza and other official ceremonies involving police and firefighters.

So the graphic isn't simply a photograph with an exaggerated caption. The visual itself is not reliable evidence of the alleged September 11 scene.

What happened at Ground Zero on September 11?

Mamdani did attend the 25th-anniversary ceremony despite calls from some critics and a petition seeking to keep him away.

But he did not use the occasion for the kind of dramatic political stunt implied by the graphic.

The mayor had already declared September 11 an annual Day of Remembrance and Service, and on the anniversary he participated in the solemn Ground Zero observance.

One of the more notable moments involving Mamdani was actually his brief handshake with Giuliani, who had publicly criticized Mamdani's attendance before the ceremony.

Mamdani also released more than 170,000 pages of city records concerning the aftermath of 9/11, including documents concerning air quality and the city's response to health concerns around Ground Zero.

So, did Mamdani “do the unthinkable”?

Not in the way the graphic says.

There really was a controversial pen handoff.

There really was a connection between the recipient, Ramzi Kassem, and the defense of Ahmed al-Darbi.

And there really was substantial criticism of Mamdani for choosing to give Kassem the ceremonial pen.

But the viral graphic changes the context in several important ways:

• The pen incident happened September 4, not September 11.
• It happened at City Hall, not at the Ground Zero memorial.
• Kassem was a defense lawyer, not an al-Qaeda member.
• There is no established evidence that Mamdani intended the gesture as a pro-terrorist or anti-9/11 message.
• The image used in the graphic does not document the September 11 ceremony and appears to be recycled/misattributed imagery.
• Mamdani did attend the actual Ground Zero ceremony on September 11 and participated in the solemn commemoration.

Bottom line

The controversy is legitimate enough to report: Mamdani really did have the ceremonial pen passed to his chief counsel after signing 9/11-related executive orders, and Kassem's history representing Ahmed al-Darbi explains why critics found the optics deeply offensive.

But calling it something Mamdani did “during the 9/11 ceremony” is misleading. The incident happened one week earlier at City Hall, and the graphic's image does not accurately portray that event.

The strongest conclusion supported by the evidence is therefore: MISLEADING — real incident, radically overstated context.