This document provides an overview of social movements. It defines social movements as group actions that empower oppressed populations to enact social or political change. The document then discusses the history and theories of social movements, including resource mobilization theory, political process theory, and deprivation theory. It also outlines different types of social movements such as reform, revolutionary, reactionary, resistance, and utopian movements. Examples of social movements from around the world are also presented. The document concludes by noting some advantages of social movements in bringing about beneficial social change.