The document analyzes the discourse of the knowledge society and the historical development of social sciences, from Giro decolonial, to understand how the Knowledge Society not only considers the social sciences lost their social function, but also considers a threat that must be eliminated. It is consequence that the only areas of modern knowledge trained to expose social institutions legitimizing inequalities and dominations project of modernity have been social disciplines. Some of these proposals has built criticisms denounce different forms of constricting the person and encapsulate it within the standards of modernity. In addition, some of its currents of thought have proposed alternative society to the present-neoliberal capitalism, which becomes a risk for the authorities to legitimize and naturalize contemporary forms of social organization. Although, the social sciences are part of the constitutive core of the project of modernity, they have been able to propose critical perspectives of contemporary political, social and cultural project. Even the social sciences have coming to propose alternative forms of capitalist structure. However, the social disciplines are part of Eurocentric and colonial project of modernity. Those disciplines have been fundamental to its consolidation and expansion. Nevertheless, some authorities and economic institutions have advocated to eliminate the social sciences as areas of formal knowledge. These views are part of the current dominant discourse, called the Knowledge Society, a concept that expresses the post-industrial changes, while expressing the political project of modernity.