[Towards social eugenics. Ideology and bioethics in the construction of the social policy]

The social eugenics is the real face of the biomedical application of an ideological paradigm, self-styled like "progressive", that claims the radical transformation of the western society from laicist and utilitarians positions. This article tries to decipher the historical roots, the bioethical language and the political - social implications of this paradigm, which questions the essential dignity of any human life in benefit of "new rights", constructed ex professo. For it, it exposes three analytical dimensions of his "historical possibilities" (retrospective, perspective and Forward studies), taking as an example the role of the social Policy, and especially, the doctrinal and institutional paradoxes of the "Welfare state" in Spain.