Synopsis In this volume the authors engage in a productive discussion of the history and contemporary dilemmas facing the movement that are variously described as antisystemic, social or popular. The authors believe that these movements. Which have for the past 150 years protested and organized against the multiple injustices of the existing system, are the key locus of social transformation. Immanuel Wallerstein beings by presenting a historical overview of the range and interrelations what he calls antisystemic movements, tracing their development out of the French Revolution. Giovanni Arrighi focuses on those movements that have been based in the working class, while Samir Amin Concentrates in the movements, particularly in the periphery, that have placed “National liberation” at or near the top of their agenda. Finally, Andre Gunder Frank and Marta Fuentes look at the “new social movements” (particularly the women’s peace, and ecology movements), which they argue are not new While the author’ po0ints of agreement are many, so are their points of divergence. In the final chapter, they outline both, and discuss the ways In which these movements are transforming the revolutionary process itself.