This book is an unprecedented attempt to analyze the role of the law in the global movement for social justice. Case studies in the book are written by leading scholars from both the global South and the global North, and combine empirical research on the ground with innovative sociolegal theory to shed new light on a wide array of topics. Among the issues examined are the role of law and politics in the World Social Forum; the struggle of the anti-sweatshop movement for the protection of international labour rights; and the challenge to neoliberal globalization and liberal human rights raised by grassroots movements in India and indigenous peoples around the world. These and other cases, the editors argue, signal the emergence of a subaltern cosmopolitan law and politics that calls for new social and legal theories capable of capturing the potential and tensions of counter-hegemonic globalization.