The present research aims to describe and characterize the actions in the reparation processes of Grandmothers of Plaza de Mayo, and Mothers and Relatives of Disappeared Detainees, in Argentina and Uruguay respectively, in the period from 2005 to 2015, in the face of the effects of political violence and state terrorism. It is proposed to make visible what the organizations' actions have been to influence advances in reparations, with special emphasis on concrete actions in contexts of self-styled "progressive" governments. A qualitative research is proposed, with the substantive use of the technique of documentary analysis and in-depth interviews for data collection, and for the analysis of said data we proceeded through discourse analysis. The results indicate that the central axes linked to comprehensive reparation in each organization are oriented towards: psychosocial reparation, accompaniment in the search process, progress at the legal level, recognition by the State of its responsibility before the crimes committed, the clarification of the truth, especially in the awareness of young people, with an educational paradigm that encourages education for memory. Reparatory mechanisms have manifested themselves in a similar way in the contexts of political progressivism, both in Argentina and Uruguay. However, the Argentine context has established a greater deployment of policies, with a special focus on the restitution of rights, and guarantees of non-repetition, developing an instituting policy promoted by the human rights movement. In the Uruguayan case, although progressivism enabled the creation of new institutions, providing new spaces and a budget to respond to the citizenship and mainly to the victims' relatives, for truth, justice and reparation, these have been poorly satisfactory measures, in where there is still a consolidation of policies, demanded by the human rights movement.