In City Trenches, Ira Katznelson looks at an important phenomenon of the sixties—the resurgence of community activism—and explains its sources, challenges, and failure. Katznelson argues that the American working class perceives workplace politics and community politics as separate and distinct spheres, a perception that defeats attempts to address grievances or raise demands that break the rules of local politics or of bread-and-butter unionism. He supports his thesis with an absorbing case study of Washington Heights-Inwood, a multiethnic working-class community in Manhattan.