The thesis aims to contribute to the understanding of the relationship between mobilization and repressive social control, from a socio-spatial perspective, based on the 2013 protests cycle in the city of Rio de Janeiro and the movements of mothers and relatives of victims of state violence from the city s slums and suburbs. It is the result of a research experience in which it was possible to follow directly the dynamics of political mobilization and state repression developed during the 2013 demonstrations and, later, with the groups and movements carried out by the mothers and relatives of victims of state violence in Rio. It also comprises how their struggle around the public claim and the political elaboration of mourning and suffering for the loss of a loved one is constituted. It was noticed that during the cycle of protests a repressive logic of militarized interventions developed in both asphalt and favelas reached greater expressiveness in the public scene, as well as the protest events developed by social actors, in both contexts. In this sense, the approach understands the effects of the interactions between repression and mobilization and clarifying a whole set of repertoires, frameworks and modes of subjectivation that are produced, conserved and transformed over time, resulting on one hand, in the production of the criminalization of the enemy, which may be the insurgent and the undesirable of the city, and, on the other hand, in the production of symbolic and discursive practices, strategies and frames by the social actors who constitute the political struggle for their Voice and for their rights.