Political movements draw fanatics like a flame draws moths. Do not put it past the leftists to encourage these nuts to try and join in with the Tea Party movement in order to smear all the participants. There is nothing too low for the left if it is thought to advance their interests.
And I suppose the AP will now start investigating William Ayers and Bernadine Dohrn with the same intensity they show for a few unknown kooks and racists that insert themselves into one Tea Party chapter. At least the Tea Party will get rid of these types; the unrepentant Ayers and Dohrn are, if anything, celebrated in the mainstream media (see Page One of the NY Times, believe it or not, dated September 11, 2001).