It was intended to understand how civil society participated in the formulation of strategies and control of the implementation of Social Assistance policy in the municipality of Rio de Janeiro and, above all, to understand the forms and mechanisms by which elected councilors, representatives of civil society in the 2013-2015 administration inscribed their political projects within the State apparatus through the representation of their entities, understood in this study as private hegemony devices. In this context, we was sought to: a) identify which themes and situations were analyzed in the 2013-2015 administration of the CMAS / RJ; b) know the forms and the mechanisms by which the civil councilors inscribed their projects through the representation of their entities; c) to understand how consensus was built; and d) to know the extent to which the civil counselors projects were aligned with the guidelines of the Single Social Assistance System (SUAS). For the development of the study Gramscian concepts such as civil society, organic intellectuals, among others, were used besides the accomplishment of bibliographical research that provided approximate information on the cut of the subject in question. The research also had documentary analysis collected in the field, that is, of 41 minutes, 175 resolutions and 4 reports elaborated in the analyzed management, which were later examined from the thematic content. There were also 12 semi-structured interviews, which allowed a more intimate contact with the research subjects. This step provided a better understanding not only of the material collected, but especially about the reconstitution of the creation of CMAS/RJ, since some of those interviewees had been in this space for a long time. The data obtained and the analyzes undertaken lead to the realization that the CMAS/RJ is in a peripheral position in relation to the processes involving propositive decisions for social assistance policy due to the extremely self-referential and cartorial character. It is also possible to identify a conscientious and collaborative trend among the civil and government board members and deputies, as well as to identify a dynamic word of mouth for the reproduction and perpetuation of the establishment by the councilors, who more of 90 percent, are social workers. What is in dispute on the Council s agenda is the interdependence between the public and the private in the provision of social assistance services. In this way, the study reveals how the National Social Assistance Policy (PNAS) did not break and did not overcome the public-private relationship, but it has resignified it in the history of social assistance in Brazil. The main challenge was to think about CMAS/RJ, taking into account its tensions, contradictions, limits and possibilities, without reiterating a fatalistic discourse that configures this place as that of bargaining, cooptation and the struggle for corporate interests or taking as the the only possible space for the materialization of democracy and the exclusive means for evaluating and proposing social assistance policies in the municipality.