This article was featured in New York’s One Great Story newsletter. Sign up here. It was a little more than 24 hours after Zohran Mamdani had declared victory in a thunderous speech at the Brooklyn Paramount — one in which he mocked Andrew Cuomo and lit into Donald Trump and all the forces of reaction that had kept New Yorkers paying too much for too little and in which he declared himself a proud Muslim, a proud immigrant, and a proud democratic socialist; quoted Eugene V. Debs and Jawaharlal Nehru; and spoke untranslated Arabic — that the newly minted mayor-elect...