In promos, it calls itself "The radio Rush Limbaugh would be listening to--if he hadn't lost his hearing to drug abuse." This is Air America, the long-promised liberal talk network that came to squalling life last week. The kingdom of right-wing talk radio now has a band of left-wing insurrectionists in its bosom.
It's a big bosom. Limbaugh (whose name two of Air America's hosts inexcusably mispronounced), Sean Hannity, Bill O'Reilly and their national and local kin dominate the airwaves so powerfully that a visitor to the U.S. might ask if we still have a two-party system. That's one reason Air...