Not long ago, New York City Mayor Zohran Mamdani was demonized by leaders of both political parties. Today, just six months after taking office, the 34-year-old democratic socialist's political strength is surging.

Jalen Brunson held up the golden NBA championship trophy for a forest of outstretched hands to touch as fans celebrated the New York Knicks' first title in 53 years with a booming parade through Manhattan's skyscraper-flanked "Canyon of Heroes."