This article analyzes the role of Mauricio López (1955–1977) in shaping a socially engaged ecumenism in Latin America. It argues that López was a key figure in promoting a form of ecumenical praxis rooted in the defence of human rights, social justice, and political resistance during the Southern Cone dictatorships. This study examines his contributions to international ecumenical organizations—such as the World Student Christian Federation and the World Council of Churches—as well as his work in Argentina through the Ecumenical Committee for Social Action and his leadership at the National University of San Luis. This article adopts a historical-documentary methodology, based on primary sources from the World Council of Churches archives in Geneva, Switzerland, and the Cuyo Ecumenical Foundation, along with secondary literature and oral testimonies. Through the analysis of his writings, institutional roles, and political engagement, this study highlights the continuing relevance of López's thought and practice in understanding the intersection between faith, social transformation, and resistance in twentieth-century Latin American ecumenism.
Alejandro Paredes (Fri,) studied this question.