Glenn Beck on Thursday broached a topic that he said “horrified” him when it was brought to his attention roughly two weeks ago, describing it as an “effort to re-write our history and catalyze a new culture for America” with the help of “America’s latest propaganda machine.” Beck proceeded to tell his viewers about two groups, the first called “Imagining America” and the second called “The U.S. Department of Arts and Culture.” The latter isn’t actually a body of the United States government, but in the group’s own words, “the nation’s newest people-powered department, founded on the truth that art...