Social Movements: The Key Concepts provides an insightful, contemporary introduction to some of the frequently encountered terms and groups that are central to the study of collective action and social and political activism.

Graeme Chesters is Senior Research Fellow in Peace Studies at Bradford University, UK. His books for Routledge include Complexity and Social Movements: Multitudes at the Edge of Chaos (2006) with Ian Welsh.

Ian Welsh is Reader in Sociology at Cardiff University, UK. His books for Routledge include Mobilising Modernity: The Nuclear Moment (2000).

Introduction. Key Concepts A-Z. Bibliography