Thursday, the Washington Post backed off the criticism of the Tea Party as racist buffoons a bit by reporting a study on the signs of the Freedomworks' sponsored 9/12/2010 march on the Capitol.
Here is another piece from Reason contributor Cathy Young addressing and debunking that myth in the context of the April 15 Taxpayer March at the Washington Monument.
I wrote on this subject back in early May of this year in my extended post "What Sort of Despotism?" Scroll down to the bottom to read the paragraph beginning "Many of the self-composed and hand-lettered signs of the Tea Party protestors are far closer to the truth than Obama's intentionally deceitful speech." You'll find a link to a photographic essay on the 9/12/2009 March on Washington there.