Bernie Sanders speaks at a convention of the International Association of Machinists and Aerospace Workers on April 8, 2019, in Las Vegas. (AP / John Locher) EDITOR’S NOTE: Each week we cross-post an excerpt from Katrina vanden Heuvel’s column at the WashingtonPost.com. Read the full text of Katrina’s column here . On Tuesday night, the two leading progressive candidates for the Democratic presidential nomination, Senators Bernie Sanders (I-VT) and Elizabeth Warren (D-MA), will appear […]