Universal Declaration of Human Rights 70th anniversary is been celebrated in 2018. On the other hand, people are still arguing about the political, juridical, social and civilizational gains it has provided. Such discussions, however, focus on peripheral aspects of Human Rights, losing sight of what could be understood as its highest normative gain. Whenever arguments are not completely rectified, they dissociate from the social demands that actually gave them meaning and relevance. From this scope, the article intends to reconstruct the (...) conceptual and argumentative aspects of Human Rights from the critical theory of relations of justification by Rainer Forst, in which Human Rights are interpreted as arising from a fundamental right to justification. This fundamental right, in Forst’s theory, is interpreted as being part of the “deep grammar” of social conflicts. According to the Forstian theory, we argue for an interpretation of Human Rights capable of encompassing the multiple aspects of these rights, avoiding reductionism and unilateral interpretations of it. This presentation has been divided into three parts. First, it presented some traditional “pictures”, current forms of referring to Human Rights and its characteristics, against which another picture will be proposed, in order to place social conflicts and rejections of injustice as a starting point for the Human Rights. Next, the Forst’s principle of justification and the recursive argument that led toit was discussed. Finally, a critical interpretation of the Forstian proposal, which dealtwith the purposes that his theory is allegedly seeking, was carried out. (shrink)