Sabrina Zajak is leader of the Department Consensus and Conflict at the German Center for Integration and Migration Research, Berlin, and Assistant Professor for globalization conflicts, social movement and labour at the Ruhr- University Bochum, Institute for Social Movements, Germany. She is the author of Transnational Activism, Global Labour Governance, and China.Sebastian Haunss is founding member of the Institute for Social Movement Studies (ipb) and Professor of Political Science at the University of Bremen Research Center on Inequality and Social Policy (SOCIUM) where he leads the research group on Social Conflicts. He is author of Conflicts in the Knowledge Society: The Contentious Politics of Intellectual Property.

• 1. Social Stratification and Social Movements: An Introduction 2. Social Movements, Stratification, and International Political Economy Integrating Insights 3. Social Movement Unionism: Theoretical Foundation and Empirical Evidence 4. New Cleavages in the Knowledge Society? Social Movements and the Production, Use, and Valorization of Knowledge 5. Class Counts, but Social Background Matters. Habitus-Structure Conflicts and Social Inequality in Protest Research 6. Crowd-Cleavage Alignment. Do Protest-Issues and Protesters’ Cleavage Position Align? 7. Adapting Environmental and Climate Justice to Local Political Struggles in South Africa 8. Movement Goals and Recruitment Strategies: How Mitigation and Adaptation Shape Inclusion in Climate Justice Projects 9. Mobilization of the Most Deprived – Insights from Brazilian Movements of Homeless People and Recyclable Materials Collectors 10. Social Movements and Intersectionality: The Case of Migrants’ Social Activism