The core object of this work is the black lesbian woman: a political subject under construction in Brazil. This study aims to give visibility to the processes of intersectional discrimination and oppression daily experienced by the black lesbian woman. The research wants to contribute with the construction and affirmation of this identity, as well as to provide elements for Social Work professional interventions and for the education of new Social Workers, in the face of contemporary expressions of social inequalities. Four women contributed to the construction of this work, and the main criteria for their selection were their self-determination as black and lesbians. Furthermore, the researcher looked for recognized political activists of the black lesbians movement, between the ages of 35 and 65, in order to enable the expression of generational differences. The field work, qualitative in nature, was based on semi-structured interviews, dealing with the following aspects: a) Personal and political history; b) Questions related to race, gender and sexuality; c) Prejudice and discrimination, and d) Public policies and Social Work. Each one of those aspects was discussed in terms of identity, race and prejudice, all of them related to Social Work. The fieldwork revealed that in some situations of racism are far more perverse and relevant than discrimination and prejudice based on lesbian phobia.