Book excerpt: The authors examine popular religion as a vital source of new values and experiences as well as a source of pressure for change in the church, political life, and the social order as a whole and deal with the issues of poverty and the role of the poor within the church and political structures. Exploring areas from Nicaragua, El Salvador, Brazil, Bolivia, Colombia, and Chile, the authors analyze the transformation in popular religion and reevaluate the growth of grassroots organizations.