Zohran Mamdani , a self-described democratic socialist, has been elected mayor of New York City. More than one million New Yorkers — 50.4% of the electorate — cast their ballots for a guy who promises government-run grocery stores, free buses, a rent-freeze, diminishing the role of police in fighting crime, higher taxes on the wealthy and a vastly expanded government sector. Some of his best numbers came from the gentrified or gentrifying neighborhoods of Brooklyn. Prospect Heights, East