Zohran Mamdani, mayoral candidate in New York City, has been expressing high hopes of spreading socialism around New York. The Democratic Socialists of America (DSA) has admitted to assisting Mamdani with his platform and having helped him win the primary. Mamdani tosses out Marxist quotes — control the means of production, altering private property ownership, state-run grocery stores, free transportation — but there is more, or perhaps less, to the current Democratic Socialists, and therefore more, or perhaps less, to Mamdani. There used to be a clear distinction between socialism and communism. When the Communist Manifesto was released, socialism was...