This article analyzes discriminatory attitudes from the point of view of their relationship with the legitimation of social inequalities at the individual and institutional level, according to Reygadas’ theoretical proposal. We understand that discriminatory attitudes imply an association of differences with asymmetries in terms of inferiorities and/or dangerousness of the difference. In such associations, a perception scheme is articulated, where the different sources of inequality are attached to individual traits (gender, ethnicity, sexual orientation, etc.), as well as to institutionalized forms of social relationships rooted on territorial coordinates. In this sense, the article presents both general guidelines for an analytical model and an empirical application to four focal groups of preadolescent and adolescent individuals in Metropolitan Buenos Aires.