In a day of firsts at City Hall, Zohran Mamdani was sworn in as New York City's 112th mayor in front of a large crowd of supporters. Now officially holding what's often called "the second toughest job in America," Mamdani faces a daunting set of challenges. NY1 investigative reporter Courtney Gross, political reporter Bobby Cuza and political anchor Errol Louis look back on a monumental New Year's Day and what this new era could mean for New York City.

Editor's note: We misattributed Eric Adams' elevator comments to a lightning-round question from a mayoral debate. It actually came from Nayeema Raza's "Smart Girl Dumb Questions" podcast episode featuring Adams.