The investigation aims to question the naturalization of State s violence against black bodies in Brazil. For this urgent task, the work develops a dialogue between decolonial and foucauldian philosophy, and is divided in four chapters. The first one points out that this naturalization has its roots in brazilian history since colonial time, with the objectification of black bodies during slavery and also at the abolitionist movement. The second one approaches the post-abolition period, its whitening project and the scientific racism. The third part faces the auto de resistência as a contemporary practice of State s racism in the brazilian biopolitic society. Finally, the fourth chapter intends to analyze resistances and possibilities of decolonial transformations of this violent and objectifying reality.