The goal of this book is to join social movement analysis with collective action theory. To that end, the author introduces the organizational empowerment model of collective action. All social movement theories lack a discussion of the influence of movement organization on the tactics of an organization. A national survey of social movement organizations is employed to develop a model of how the organizational features of the local group, competition among social movement organizations, the political settings of the organization, and organizational empowerment influence collective action style. This model will allow for testing some long held assumptions about organizational change as well as assumptions about the efficacy of poor people organized to achieve change.