Mamdani Thanked the Same Billionaire He Publicly Shamed, Wait, What Happened?

Last week, New York City Mayor Zohran Mamdani did something few people expected: he stood at One Police Plaza and publicly thanked a billionaire.

Not just any billionaire. Ken Griffin, the hedge fund titan he’d singled out by name just days earlier in a viral video, pointing at the man’s $238 million penthouse while announcing a new “tax the rich” policy.

Yeah, that guy.

If you’re feeling a bit of whiplash, you’re not alone. The whole thing has left New Yorkers and political watchers scratching their heads. It’s a story about confrontation and awkward harmony, sharp rhetoric and pragmatic reality. And honestly, it says a lot about the weird political moment we’re living in.

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The Video That Started It All, Tax Day Theater Outside a $238 Million Penthouse

Let’s rewind to April 15th.

Mayor Mamdani, a self-declared democratic socialist who ran on taxing the ultrawealthy, posted a slickly produced social media video that took aim at a single piece of property: Ken Griffin’s Central Park South penthouse.

Standing on the sidewalk outside the 24,000-square-foot mega-apartment, which Griffin purchased for an American-record $238 million in 2019, Mamdani spoke directly into the camera: “This is an annual fee on luxury properties worth more than $5 million, whose owners do not live full-time in the city. Like for this penthouse, which hedge fund CEO Ken Griffin bought for $238 million.”

The message was blunt and deliberately personal. The video was celebrating a newly announced pied-à-terre tax, a surcharge on ultra-expensive second homes owned by people who don’t actually call New York City home. The mayor’s team cheered it as their most viewed clip yet.

To his supporters, it was bold. To his critics, it was a dangerous public shaming of a single individual who has invested heavily in the city’s economy and charitable causes. Either way, it was absolutely certain the billionaire would respond.

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Billionaire Strikes Back, Citadel’s $6 Billion Threat

Griffin didn’t take the name-drop lying down.

Citadel’s COO Gerald Beeson fired off a blistering company-wide letter, calling Mamdani’s video “shameful” and accusing the mayor of displaying “the ignorance and disdain of the elite political class towards those who have been consistently committed to building one of the greatest cities in the world.”

And then came the real threat: Citadel hinted it might pull its massive $6 billion redevelopment project at 350 Park Avenue, a project that could create roughly 6,000 construction jobs and support more than 15,000 permanent positions in Midtown.

Griffin himself spoke at an investment conference in Oslo, calling the stunt a “profound lack of judgment” and questioning the wisdom of “demonizing” business leaders who power the city’s economy.

The stakes were suddenly sky high. A single viral video had escalated into a potential economic crisis for New York City, and neither side showed signs of backing down.

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The Strange Scene at the Hall of Heroes, Thanking Griffin for a Police Memorial

Then came the twist.

On Tuesday, April 28, Mayor Mamdani attended the NYPD’s annual ceremony adding fallen officers’ names to the Hall of Heroes at One Police Plaza. It was a somber, respectful event, with families of slain officers present and 103 names newly inscribed on the memorial walls.

Standing before department brass and grieving loved ones, the mayor made a series of remarks praising Police Commissioner Jessica Tisch and NYPD leadership. And then, he said something that caught everyone’s attention:

“I also want to thank Ken Griffin for funding a memorial wall that will open later this year.”

The same billionaire. The same mayor who weeks earlier had pointed at Griffin’s $238 million apartment as exhibit A in his case for “taxing the rich.” Now he was thanking him, on camera, no less, for underwriting a wall honoring NYPD officers lost on 9/11 and those who later succumbed to related illnesses.

Griffin’s donation, reportedly in the hundreds of thousands of dollars, came through the New York City Police Foundation, a nonprofit. He didn’t attend the ceremony (a scheduling conflict, his spokesperson said). But his money was there, and the mayor acknowledged it.

A reporter asked Mamdani afterward whether he regretted the viral April 15 video. His answer was a clear “no.” No apology, no regret, just a brief, almost businesslike “thank you” amidst the candles and brass plaques.

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The Deeper Irony, A Socialist Mayor, an NYPD Memorial, and Political Reality

Here’s where the story gets genuinely fascinating.

Mayor Mamdani built his political career on challenging the billionaire class. He’s a member of the Democratic Socialists of America who once called the NYPD “racist, homophobic and a central threat to public safety.” During his campaign, he faced more than $40 million in billionaire-funded opposition spending.

And yet, here he was, standing in an NYPD hall, thanking a billionaire for supporting police memorial infrastructure.

If you’re looking for political consistency, well, you might want to look somewhere else.

But if you’re looking at political reality — the messy, compromising, often contradictory business of actually running a city, then the moment makes a strange kind of sense. Even for a socialist mayor, the bills have to get paid somehow, and it’s not always your friends who step forward to help.

The irony runs even deeper. Police Commissioner Jessica Tisch, who oversees the same NYPD force Mamdani once wanted to defund, is herself a billionaire heiress, and by many accounts, her relationship with the mayor has been surprisingly functional. In a city where the political lines are drawn in sharpie, the Mamdani administration keeps bumping into shades of gray.

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What Is the Pied-à-Terre Tax Really About?

Let’s take a quick, jargon-free look at the policy that started this whole mess, because understanding the tax makes the feud feel a little less abstract, and a lot more relatable.

Think of it like this: some people own luxury apartments in New York City that sit empty most of the year, a “pied-à-terre” (French for “foot on the ground”) they use maybe twice a year while actually living in Florida or London or wherever. These apartments are worth millions. They generate very little local economic activity, no full-time residents buying groceries or sending kids to schools. Yet for decades, these homes haven’t really been taxed at a rate that matches their value to the people who actually live in New York.

This tax changes that.

The new pied-à-terre tax announced by Mamdani and Governor Kathy Hochul applies an annual surcharge on residential properties worth more than $5 million if the owner’s primary residence is outside New York City. It’s expected to generate roughly $500 million annually for the city, money the mayor has vowed to put toward free childcare, cleaner streets, and safer neighborhoods.

By the way, 93% of New Yorkers support the idea. It’s wildly popular.

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What This Tells Us About NYC’s Political Future

So what do we make of all this, the video, the threat, the memorial, the thank-you?

One reading is that this is simply what governance looks like when a city’s political leadership and its financial engine are in open conflict. Mamdani needs revenue and public support to deliver on his promises; Griffin represents exactly the kind of wealth that funds city projects and cultural institutions. They’re stuck with each other, whether they like it or not.

Another reading is darker: this could be the start of a slow unravelling of New York’s relationship with its wealthiest residents. Citadel has already signaled it might shift its center of gravity elsewhere. Other businesses may follow suit.

But a third reading is, in a strange way, mildly encouraging. People on opposite ends of the political spectrum can still, even in today’s divided environment, find themselves in the same room, honoring the same fallen heroes, with one saying “thank you.” Even if that “thank you” came through slightly gritted teeth.

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A City in Constant Negotiation

The Mamdani-Griffin saga isn’t really about a single video or a single check. It’s about the permanent, uneasy negotiation between progressive politics and the deep pockets that have long kept New York City humming.

It’s easy to be purist. It’s harder to govern.

Mamdani’s thank you to Griffin doesn’t erase the viral video or the policy behind it. It doesn’t mean the mayor is suddenly friendly to billionaires. It doesn’t even mean he was happy to be there publicly thanking one of them.

But it does serve as a vivid reminder: in a city of 8 million stories, sometimes the ones that don’t quite make sense are the ones that matter most.