While you were enjoying your Fourth of July weekend, I was attending a national conference on socialism. Why? Because socialism is having its moment on the left. Since there’s often confusion as to what socialism really is, I decided to attend the Socialism 2019 conference at the Hyatt Hotel in Chicago over the Fourth of July weekend. The conference, which had the tag line “No Borders, No Bosses, No Binaries,” contained a cross-section of the most pertinent hard-left thought in America. Among the sponsors were the Democratic Socialists of America and Jacobin, a quarterly socialist magazine. The walls of the...