Based on the discussion on the monolingualism of the other undertaken by Derrida and the notions of decolonization, coloniality, decoloniality, zone of non-being and the abyssal line found in Fanon, Quijano, Mignolo and Sousa Santos, this work brings in its textual body the concept of device linguistic-racial, present here as a means to reflect on the relationship between the teaching of Brazilian Portuguese and ethnic-racial relations, and as a means to think about the decolonization of the language in a country like Brazil, whose European colonialism was able to ruin black and indigenous bodies by imposing on them, using indefensible violence, “an existential deviation” (Fanon, 2008, p.30). For this reason, the idea of universal ethics and the notion of love evoked by Freire, patron of Brazilian education, are revisited, bearing in mind that there cannot be social justice if there is no epistemological justice, as Boaventura de Sousa Santos thinks.