The study aims to present the research conducted at UERJ in order to investigate the current experiences of subjects, from the advent of the policy for vacancies reservation in this institution (implemented since 2003). This institution is the pioneer in implementing the policy of vacancies quota reservation in the country. Although different criteria have been established via a quota system - racial, public schools, among others - the triggering factor of greater polemic and controversy was the use of racial cut-off. UERJ talks though walls. The specificity of communication modes and transmission of information by the institution raised a methodology where the researcher was pointed toward the walls, murals, corridors and institutes surroundings. Traces of the signs left by the records of the subjects at the university are followed by the researcher during random walk (for six months 600 hundred images were photographically registered). The researcher, the research subjects and photographic images, interact at the time of interview, the same being understood as a space for the construction of meaning mediated by language. What the policy for vacancies quota reservation made exist at the university and everyday practices that were triggered by the experience? These and other questions guided the research and identified ways and thoughts, especially in the field of social psychology, sociocritical perspective. The authors Michel de Certeau, M. Bakhtin, F. Guattari and M. Foucault helped to reflect on the construction of subjectivity and everyday practices through the implementation of a policy of affirmative action, the themes for it triggered and the micropolitical effects of its consolidation in the scenario of Brazilian higher education.