This book reviews the history of Latin American Christianity in terms of the impact of both Roman Catholiscism and Protestantism on society. It summarizes the socio-polítical analysis on the basis of which a growing number of Latin Americans - Christians and non-Christians alike - are undertaking a historical project of liberation in the direction of a socialist society. It gibes an account of the emergence of groups and ministers and leymen in all the churches commited to this purpose, and discusses some of their pronouncements. It finnaly offers an account of the direction of the thought of some of the most outstanding Latin American theologians.