In past economic crises, populist fervor has been for expanding the power of the national government to address America’s pressing needs. Pleas for making good the nation’s commitment to equality and welfare have been as loud as those for liberty. Now the many who are struggling have no progressive champion. The left have ceded the field to the Tea Party and, in doing so, allowed it to make history. It is building political power by selling the promise of a return to a mythic past.