What do we make of former friends who fell down the rabbit hole of the Right? How to name the rude currents eroding the Left, those which have claimed the hearts, minds and Substacks of so many former friends and fellow travelers? There are the journalist-provocateurs and the readers who have followed them rightward, the Trumpers-come-lately marching on to Glenn Greenwald’s Rumble or vanishing into Max Blumenthal’s Grayzone. There are those not quite yet there, such as Ana Kasparian of The Young Turks, currently mourning the leftism she now believes “gaslit” her about a “crime wave” it refuses to admit....