Over at Breitbart’s Big Hollywood, 23-year-old comedian Steven Crowder has been outlining an appalling show business story. According to Crowder—my sometime colleague at PJTV—his manager submitted his work to some producers at The Daily Show with Jon Stewart. One senior producer wrote to the manager to say, “Steven is definitely a talented guy,” but “we never book conservative pundits.” Crowder then made one of his weekly YouTube videos in which he displayed the letter and discussed the incident. Mostly, he did this by way of promoting his friend Benjamin Shapiro’s new book Primetime Propaganda which, aptly enough, exposes TV’s tacit...