The urban poor and working class now make up the majority of the world's population and this segment is growing dramatically as the global population expands to 10 billion by mid-century. Much of the population growth results from the displacement of rural peasants to the urban cores, resulting in the vast expansion of mega-cities with 10 to 20 million people in the global South. The proliferation of informal settlements and slums particularly in the global south have created the conditions in which urban areas have become the principal sites of social upheaval as people seek to improve their living conditions. Drawing from case studies in Africa, Latin America, and Asia, the various chapters in this book map and analyze the ways in which the majority of the world exists and struggles in the contemporary urban context. Advancing beyond a liberal perspective, the book unpacks the ways in which Urban Social Movements (USMs) in the global south have challenged or transformed how the city is organized and the possibilities that they have created for a revolutionary alternative to the capitalist hegemonic framework.