This article presents the results of an investigation (2018-2019) that focused on problematizing the relations between information pluralism and the mass-mediation of the Chilean-Mapuche conflict in the Araucania Region in southern Chile. In this region, several issues occur due to the confrontation among the Chilean nation-state, Mapuche movements, and transnational corporations located on ancestral territories. Using an argumentative analysis from a corpus of 18 interviews applied to communicators from the Araucania region, this study has identified various topics and argumentative structures operating as meanings regarding the aspects defining the current model of information pluralism in this region. Moreover, this study has identified the effects of the information pluralism treatment in the Chilean-Mapuche conflict and the proposals for transforming the media ecosystem that would assure moving towards a model of information pluralism of a democratic and intercultural nature. The results establish that the main topics refer to political, economic, intercultural, security, formative, and media aspects.