Jill Abramson, a former executive editor of The New York Times, teaches journalism at Northeastern University and is a contributing Globe Opinion writer.

The first politician to weigh in happened to be the show’s July 17 guest, Sen. Adam B. Schiff, D-Calif. He posted on social media, “Just finished taping with Stephen Colbert … If Paramount and CBS ended the Late Show for political reasons, the public deserves to know. And deserves better.”