NEW YORK—Last night, hours after the chairman of the Federal Communications Commission, Brendan Carr, threatened to take action against the ABC television network because of remarks made by Jimmy Kimmel on his late-night show, the network announced it was “indefinitely” suspending the program. In his opening monologue on Monday, Kimmel had commented on the murder of Charlie Kirk. The following can be attributed to Jameel Jaffer, executive director of the Knight First Amendment Institute...