Conservative blogger Michelle Malkin jumped on Obama campaign manager Jim Messina’s tweet in which he quoted columnist Dana Milbank’s latest story saying: “The chimichanga? It may be the only thing Republicans have left to offer Latinos.” Malkin’s response, titled “Chimichanga is the new macaca,” is a reference to George Allen’s infamous comment on the campaign trail in 2006 in which he called a person of color “macaca.” “The P.C. police, as always, are P.C. only when it’s P.E. — politically expedient,” Malkin writes.