This course explores the emergence of social movements in the United States. Although the course considers a variety of social movements that evolved in the twentieth century, it will concentrate on the mechanics of social movements rather than the histories of movements' leaders and organizations. The thrust of the course is the application of theoretical concepts to particular cases. The central questions to be asked are: (1) why do movements emerge and why do they decline? (2) what kinds of resources are mobilized on behalf of movements? (3) how do marginal groups construct world views to challenge their oppression? and (4) how does the political system respond to movements when they challenge formal structures of power? The first quarter of the course covers theoretical concepts that will be raised throughout the course. The other sections of the course will illuminate these perspectives by surveying the labor movement, the civil rights movement, the women's movement, and other movements for social change.