Mayor Zohran Mamdani reacts after speaking during his inauguration ceremony, Thursday, in New York. (AP Photo/Heather Khalifa)

NEW YORK (AP) — Zohran Mamdani became mayor of New York City on Thursday, taking over one of the most unrelenting jobs in American politics with a promise to transform government on behalf of the city’s striving, struggling working class.

Mamdani, a Democrat, was sworn in at a decommissioned subway station below City Hall just after midnight, placing his hand on a Quran as he took his oath as the city’s first Muslim mayor.

After working part of the night in his new office, Mamdani returned to City Hall in a taxi cab around midday Thursday for a grander public inauguration where U.S. Sen. Bernie Sanders, one of the mayor’s political heroes, administered the oath for a second time.

“Beginning today, we will govern expansively and audaciously. We may not always succeed, but never will we be accused of lacking the courage to try,” Mamdani told a cheering crowd.

“To those who insist that the era of big government is over, hear me when I say this: No longer will City Hall hesitate to use its power to improve New Yorkers’ lives,” he said.

Throngs turned out in the frigid cold for an inauguration viewing party just south of City Hall on a stretch of Broadway known as the “Canyon of Heroes,” famous for its ticker-tape parades.

Mamdani wasted little time getting to work after the event.

He revoked multiple executive orders issued by the previous administration since Sept. 26, 2024, the date federal authorities announced former Mayor Eric Adams had been indicted on corruption charges, which were later dismissed following intervention by the Trump administration.

Then he visited an apartment building in Brooklyn to announce he is revitalizing a city office dedicated to protecting tenants and creating two task forces focused on housing construction.

‘I will govern as a democratic socialist’

Throughout the daytime ceremony, Mamdani and other speakers hit on the theme that carried him to victory in the election: Using government power to lift up the millions of people who struggle with the city’s high cost of living.

Mamdani peppered his remarks with references to those New Yorkers, citing workers in steel-toed boots, halal cart vendors “whose knees ache from working all day” and cooks “wielding a thousand spices.”

“I was elected as a democratic socialist and I will govern as a democratic socialist,” Mamdani said. “I will not abandon my principles for fear of being deemed ‘radical.'”

Before administering the oath, Sanders told the crowd that most of the things Mamdani wants to do — including raising taxes on the rich — aren’t radical at all.

“In the richest country in the history of the world, making sure that people can live in affordable housing is not radical,” he told the crowd. “It is the right and decent thing to do.”

Mamdani was accompanied on stage by his wife, Rama Duwaji. Adams was also in attendance, sitting near another former mayor, Bill de Blasio.

Actor Mandy Patinkin, who recently hosted Mamdani to celebrate Hannukah, sang “Over the Rainbow” with children from an elementary school chorus. The invocation was given by Imam Khalid Latif, the director of the Islamic Center of New York City. Poet Cornelius Eady read an original poem called “Proof.”

In addition to being the city’s first Muslim mayor, Mamdani is also its first of South Asian descent and the first to be born in Africa. At 34, Mamdani is also the city’s youngest mayor in generations.