...Romney was greeted Tuesday by protesters dressed up like Big Bird, Elmo and other Sesame Street characters, The Des Moines Register reports. The Elmo protester shouted, "Trickle down economics does not tickle me." And the gang, identified by the newspaper as supporters of the liberal Iowa Citizens for Community Improvement, sang a ditty about the economy and Wall Street to the tune of the Sesame Street theme song. It began: "Stormy days ... taking our jobs away."