David Letterman delivered a fiery rant against CBS and parent company Paramount for cancelling Stephen Colbert’s “Late Show,” calling the decision “gutless” and “pure cowardice” as he labeled his successor a martyr of the network.

It’s a line of criticism we’ve now heard a few times from various Paramount employees. In April, months before the final settlement amount was reached, 60 Minutes correspondent Scott Pelley laid bare the stakes of the deal,