The collected essays in this book provide a comparative examination of the process of grassroots mobilization and the development of community-based forms of popular democracy in Central and South America. The first part contains studies from individual countries on organizations ranging from those supported by governments and integrated into the country's political structure to groups that were organized against the existing political system. The organizations studied included those focusing on a particular concern, such as housing, and those with wide responsibility for community affairs; but all were organizations based on common interests where people lived and, in some cases, where people worked. The second part offers theme studies on men, women and differential participation; problems and meanings associated with decentralization, especially in relation to devolution of power to the local level and the construction of popular alternatives; and the competing theoretical paradigms of new social movements and resource mobilization.