This book explores the internal functioning and exercise of power inside a widely acclaimed transnational social organization: the alternative globalization movement. Drawing on new empirical data and perspectives from the Organizational Theory (OT), it highlights the movements' many unique features that are yet to be fully grasped within theoretical debates: ideological flexibility, emphasis on networking, informal structure and refusal to accept order from political parties. The book asserts that organizational power is a real issue not only within economic enterprises or formal political and labour organizations but also within informal transnational networks and coalition groups seeking to vehicle utopian projects.