Challenged by Ku Klux Klan action in the ’20s, labor protests culminating in a general strike in the ’40s, and the rise of the civil rights and black power struggles of the ’60s, Oakland, California, seems to encapsulate in one city the broad and varied sweep of urban social movements in twentieth-century America. Taking Oakland as a case study of urban politics and society in the United States, Chris Rhomberg examines the city’s successive episodes of popular insurgency for what they can tell us about critical discontinuities in the American experience of urban political community.