ANOTHER weekend, another grass-roots demonstration starring Real Americans who are mad as hell and want to take back their country from you-know-who. Last Sunday the site was Lower Manhattan, where they jeered the “ground zero mosque.” This weekend, the scene shifted to Washington, where the avatars of oppressed white Tea Party America, Glenn Beck and Sarah Palin, were slated to “reclaim the civil rights movement” (Beck’s words) on the same spot where the Rev. Martin Luther King Jr. had his dream exactly 47 years earlier. Vive la révolution! There’s just one element missing from these snapshots of America’s ostensibly spontaneous...