The candidate could not have been more controversial—or more celebrated. Born in Kampala, the capital of Uganda, once ruled by Idi Amin, who famously declared himself “Conqueror of the British Empire” and “King of Scotland,” Zohran Kwama Mamdani, 34, is of Indian descent. His father is an academic, a professor of anthropology at Columbia University, his mother, Mira Nair, is an influential filmmaker. Zohran arrived in the USA on a visa at age seven. No doubt the agents of the feared ...