Paul Krugman sees interest group influence behind the Tea Parties:
Last but not least: it turns out that the tea parties don’t represent a spontaneous outpouring of public sentiment. They’re AstroTurf (fake grass roots) events, manufactured by the usual suspects. In particular, a key role is being played by FreedomWorks, an organization run by Richard Armey, the former House majority leader, and supported by the usual group of right-wing billionaires. And the parties are, of course, being promoted heavily by Fox News.