The 20th century contains thouse beliefs and experiments. The legacy of the 20th century is much more strongly defined by the Holocaust, which poisened the idea

The 20th century contains thouse beliefs and experiments. The legacy of the 20th century is much more strongly defined by the Holocaust, which poisened the idea of eugentics in a way that we are only now begining to undo, and only in the limited (and somewhat controversial) practice of of pre-birth genetic testing for known diseases.