David Letterman unloaded on CBS and Skydance on Friday for cancelling “The Late Show,” which he launched 32 years ago, saying the network had mistreated his successor, Stephen Colbert. In an interview posted to his YouTube channel, Letterman said he does not buy the official explanation that the show was cancelled for financial reasons.

What’s happening now is not only wrong, it goes against what we must stand for as a nation," said Robert Suttmann, president of Local 802 American Federation of Musicians.