Set of essays of a jus-anthropological and jus-sociological nature and of the science of law on the social, political, ideological and cultural problems of indigenous peoples and marginalized groups in Mexico. The core of the matter lies in the following: despite the multiple commitments established by legal actors of various kinds, international treaties and declarations, to date it has not been possible to satisfy the demands of the original communities. It is worth mentioning that, despite the existence of basic principles, such as: universality, interdependence, indivisibility and progressiveness, the fundamental demands of excluded social collectivities, recognized both in the Federal Constitution and in international treaties, in praxis have not been served.