The Late Show with Stephen Colbert is officially a late show, as in no longer with us. Its last Questionert has been answered; its final Rescue Dog rescued; its ultimate guest (Sir Paul McCartney) has left the building. Colbert filled his 80-minute finale with the same thoughtfulness, warmth and irony that has characterized his show over the last decade. In an earlier episode leading up to the end, his late night compadre Jimmy Kimmel expressed what many of us watching felt: “I’m waiting for angry Stephen to come out! I want you to go nuts.” But Colbert chose to leave the stage with grace and tenderness rather than rancor. The ten months since CBS announced Colbert’s cancellation have served as an extended advance wake—for the show but also for an entertainment industry impervious to political pressure. One of The Late Show’s last guests, Bruce Springsteen, put it bluntly on Wednesday night, expressing solidarity with Colbert as “the first guy in America who’s lost his show because we’ve got a president who can’t take a joke.” …