This book investigates a little-addressed aspect regarding the Ayotzinapa case, which is the role that civil society organizations play in the processes of accompaniment of direct and indirect victims. The case of the Miguel Agustín Pro Juárez Human Rights Center (Centro Prodh) is emblematic and allows the theories and methodologies of the study of civil society organizations to be tested. The Prodh Center played a fundamental role in maintaining and coordinating two different strategies: one of accompaniment to the victims (which allowed the construction of community social capital, key to maintaining the mobilization) and another of relations with the authorities (which allowed, in a way gradual, getting some results). Between the oblivion that the government tried to impose ("historical truth") and the memory that the group of fathers and mothers demanded, the human rights defense organizations, and especially the Prodh Center, managed to be the bridge, the link between two spheres that They were totally separated, far from each other. This has been a key factor in keeping the fight for truth and justice active for so many years.