The ways that social advocates organize to fight unaffordable housing and homelessness in Los Angeles, illuminated by a new conceptual framework for studying collective actionHow Civic Action Works renews the tradition of inquiry into collective, social problem solving. Paul Lichterman follows grassroots activists, nonprofit organization staff, "An eloquent work of major significance and deep import, written by a scholar working at the height of their craft."---Benjamin Abrams, American Journal of Sociology