“CBS has just declared war on the heartland of America. No longer is comedy going to be a covert assault on traditional American values. Now, it’s just wide out in the open,” blustered the conservative radio host in response to the news that Stephen Colbert will replace David Letterman. “It’s media planting a flag here, it’s maybe … it’s a declaration.” It’s a good thing he has until 2015 to put the finishing touches on his bomb shelter.