New York’s new mayor says he wants to be the mayor of working people — committed to affordability, fairness, and dignity in a city that has become increasingly unaffordable and unfair for ordinary families. That’s an admirable goal. But Mayor Mamdani’s first acts in office reveal a contradiction that threatens both his credibility and his agenda. Within hours of taking office, he rescinded former Mayor Eric Adams’s executive orders barring city support for the Boycott, Divestment, and Sanctions (BDS) movement against Israel and adopting the International Holocaust Remembrance Alliance (IHRA) definition of antisemitism. These were not perfunctory moves; they were...