This study aimed to understand, in the light of ANTi-History, how the constitution processes of sites of memory of resistance occurred in two physical spaces used by the political police during the Brazilian civil-military dictatorship: the buildings of DEOPS/SP and DOPS/RJ. By investigating the how related to the trajectory of each space and the inter-organizational network constituted from the joint analysis of the two processes, it was possible to bring to light all the complexity of disputes, negotiations, and movements previously underlying, making transparent the sociopolitical relations of the various actors involved, as well as the performativity of the context. The investigation of the transformation processes of the spaces of violence, performed by ordering the traces found, allowed the elaboration of alternatives historical narratives and evidenced the dynamic and contingent characteristic of a sociopast formed by network-actors. By its relational and critical-emancipatory facets, the ANTi-History approach made it possible to identify the connections in a positioned way, dissonant from the positivist mainstream hegemony and universal histories, allowing the actors sociopolitical movements to become visible by removing the apparent veil of simplicity of a binary status quo. Sites of memory serve the orientationist purpose of the duty of memory by subjecting the past to a reflexive consciousness. They are concrete measures, instruments of memory support that by becoming visible in the form of organizations, such as memory centers or memorials, claim recognition of the events of the past and the experiences of survivors, creating references for future generations with the necessary self-critique with the mistakes of the past.