Zohran Mamdani was sworn in as the new mayor of New York City during a ceremony in Bryant Park, marking a historic shift in the city's leadership. The event was marked by visible tension among prominent political figures, with Iris Weinshall, wife of Senator Chuck Schumer, appearing openly displeased as she sat alongside former mayor Eric Adams. Both Schumer and Adams have previously criticized Mamdani's outspoken pro-Palestinian stance and his vow to arrest Israeli Prime Minister Benjamin Netanyahu if he visits the city.

While some progressive lawmakers celebrated Mamdani's inauguration, others in the Democratic party remained reserved or critical. Mamdani, the city's first Muslim mayor and one of its youngest, used his speech to reaffirm his commitment to socialist policies, promising free daycare, free buses, and a new millionaire tax. He also reached out to voters concerned about the cost of living, pledging to govern inclusively and effectively. His wife, Rama Duwaji, now becomes the youngest first lady in the city's history.