Mayor Zohran Mamdani is facing the first major crisis of his week-old administration as his newly appointed tenant advocate’s radical views were exposed — including once branding homeownership a “weapon of white supremacy” and calling on the government to “seize private property.”

The series of past inflammatory social media posts by longtime housing activist Cea Weaver — Mamdani’s director of the Mayor’s Office to Protect Tenants — unearthed this week sparked outrage and a warning from the Trump administration.

Assistant Attorney General for Civil Rights at the Department of Justice Harmeet Dhillon said the feds would be on alert for any potential violations tied to the Democratic Socialists of America member’s extreme views.

“We will NOT tolerate discrimination based on skin color,” Dhillon said in a Tuesday post on X. “It is ILLEGAL. [DOJ Civil Rights Division] is paying very close attention.”

Dhillon, in an interview with One America News, added that city government “should be on notice, they’re on high scrutiny.”

“We have several federal statutes that explicitly protect people of all colors and all different kinds of backgrounds and military status and so forth from the exact kind of land grabs and reallocation and redistribution that is being promised in New York,” she told the outlet.

Mamdani indicated Tuesday he was sticking by his DSA ally.

“We made the decision to have Cea Weaver serve as our executive director for the mayor’s office to protect tenants, to build on the work that she has done to protect tenants across the city, and we were already seeing the results of that work,” he told reporters following an unrelated news conference.

Crown Heights, Brooklyn resident Weaver, 37, has long advocated for her far-left stance on private property – and the office she was tapped to lead on Thursday is focused on protecting tenants against unsafe or horrible living conditions.

“There is no such thing as a ‘good’ gentrifier, only people who are actively working on projects to dismantle white supremacy and capitalism and people who aren’t,” she posted in July 2018, according to an archived post.

A few months later, she wrote: “Impoverish the *white* middle class. Homeownership is racist/failed public policy.” 

“Private property including any kind of ESPECIALLY homeownership is a weapon of white supremacy masquerading as ‘wealth building’ public policy,” Weaver spouted in August 2019.

In a 2021 op-ed, she argued the state can “further de-commodify housing and land” by cancelling rents and shuttering eviction courts.

“And, as landlords exit the market, using state action to acquire properties and leverage disinvestment to convert thousands of homes into publicly and democratically controlled land/housing,” she wrote in the New Labor Forum. 

Weaver was part of a left-wing organization, Housing Justice For All, that worked with the New York Young Communist League to call on the state to extend its COVID eviction moratorium.

“Elect more Communists” she wrote in a December 2017 social media post.

The slew of statements connected to Weaver began coming to light in recent days, leading to an avalanche of outrage from Republicans and Democrats, including former Mayor Eric Adams, who called her past positions a “total detachment from reality.”

Dhillon, of the DOJ, warned in an X post Monday that federal housing laws trump “any collective Marxist fantasies” while commenting on a March 2021 video of Weaver making more eyebrow-raising remarks at a DSA event.

In the clip, Weaver said property should be transitioned toward a model of “shared equity” that would change the “relationship” that “especially white families” have to home ownership.

“I think the reality is that for centuries we’ve really treated property as an individualized good and not a collective good and …. transitioning to treating it as a collective good toward a model of shared equity will require that we think about it differently and it will mean families, especially white families, but POC families who are homeowners as well, are gonna have a different relationship with property than one that we currently have,” she said.

Mamdani, also a DSA member whose insurgent bid for mayor was backed by the socialist group, set off racial alarm of his own over one of his campaign planks that called for raising property taxes for “richer and whiter neighborhoods” in a bid to ease the burden on homeowners in the outer boroughs.

He also faced mockery online for saying at his Jan. 1 inauguration: “We will replace the frigidity of rugged individualism with the warmth of collectivism,” which some commentators found Communist-tinged.

The pair go back years, and Weaver served as an adviser to the Mamdani campaign in 2025, featured in The Post as part of a group of young lefty progressives in the then-candidate’s brain trust.

Mamdani, a former Queens state Assembly member who has vowed to freeze rents on rent-stabilized units, said in a 2021 online forum that he “gets most of my knowledge on housing from Cea.”  

In that same online discussion, Weaver said she believed in the need to “municipalize” housing.

“Our goal is to have the housing actually be worthless in to some degree (sic),” Weaver said at the time.

In March 2024, Weaver said on The Majority Report podcast that landlords who do not adequately maintain their buildings should lose their property.

“We can say, ‘hey, — you know — you are not maintaining this building, and we are the City of New York,’” she said. “‘We have an interest in making sure that housing is well maintained, and — and we’re gonna take this building away from you.”

In a twist of irony, Weaver’s mother owns a $1.6 million home in Tennessee, public records show.

Weaver hung up when a Post reporter called her Tuesday afternoon, saying only “I cannot talk right now.” The Mamdani administration did not return an email seeking comment about the DOJ’s warning.

City Hall later issued a statement on behalf of Weaver in which she called her past statements “regretful.”

“I’m proud to lead tenant protection efforts in the Mamdani administration,” she said. “Regretful comments from years ago do not change what has always been clear — my commitment to making housing affordable and equitable for New York’s renters. I will bring that focus to the Mayor’s Office to Protect Tenants.”

Humberto Lopes, CEO of private real estate firm HL Dynasty and the Gotham Housing Alliance, urged federal officials to “step in now.”

“We’re not even talking about socialism. They’re going straight to communism,” said Lopes, who is Puerto Rican and Portuguese.

“Where are these white supremacists in the city? She must be watching too much TikTok.”

State Assemblyman Kalman Yeger, a former City Council member, said that when Public Advocate Jumaane Williams nominated Weaver to the City Planning Commission in 2021, enough lawmakers made clear they would not confirm her.

“Guess it’s easier to name a communist to a position that doesn’t require confirmation,” he posted on X.

Weaver was a key player in lobbying the Democrat-run state Legislature to tighten the city’s rent stabilization laws in 2019, making them more pro-tenant.

Nassau County Executive Bruce Blakeman, a Republican running against Gov. Kathy Hochul this year, called on the state Legislature to amend the state constitution that guarantees the fundamental right of US citizens to own private property in response to Weaver’s missives.

“For nearly 250 years, the right to own property has been the backbone of American prosperity and freedom,” Blakeman said in a statement. “Today, radical activists are openly treating homeownership as a problem to be dismantled rather than a dream to be achieved.”

Mamdani also faced heat from Israeli officials and Jewish groups just after his inauguration for his day one move that scrapped executive orders penned by his predecessor Adams supporting Israel and aiming to fight antisemitism.

“Homeownership is how immigrants, Black, Brown, and working-class New Yorkers built stability and generational wealth despite every obstacle,” Adams posted on X about Weaver on Tuesday. 

“You have to be completely out of your f—ing mind to call that ‘white supremacy.’ That level of thinking only comes from extreme privilege and total detachment from reality.”— Additional reporting by Carl Campanile and Hannah Fierick