Last night, New York City chose the young, brilliant, and dashing Zohran Mamdani in the Democratic primary for Mayor. The City is now likely to have a new Mayor who is a democratic socialist, who speaks truth to Trump’s power, who stands up for Palestine, and who has galvanized the youth vote. His win is a rebuke to Trump, to those who try to paint criticism of the Israeli government as antisemitism, and to all centrist Democrats.

Mamdani identifies clearly, and proudly, as Muslim.

An...