Nazi Germany killed people based on the principles of eugenics

Eugenics was popular in Europe in the first decades of the XX century. Her followers believed that qualities such as a tendency to alcoholism, moral laxity and even poverty - it's hereditary traits, and fight with them only with the help of breeding selection. In practice, this meant forced sterilization and abortion have "undesirable" people society.

Eugenics, to some extent compensated for the lack of development of sciences such as psychology and genetics. Nazi Germany was based on it, selecting some and eliminating others to achieve "racial purity." The same principles guided the German medicine, conduct cruel experiments on human beings in an attempt to bring the "ideal" man.

Nazis ruined the reputation of the teaching of eugenics, and the development of science and society as a whole contributed to the principles of eugenics were deemed unethical and learning ceased to exist.

via factroom.ru