Read again.
Darwin’s Descent of Man
argued that some races of men were more highly evolved than others.
Galton argued that just as physical traits were clearly inherited among generations of people, so could be said for mental qualities (genius and talent). Galton argued that social mores needed to change so that heredity was a conscious decision, to avoid over-breeding by "less fit" members of society and the under-breeding of the "more fit" ones.
In Galton's view, social institutions such as
welfareand
insane asylums were allowing "inferior" humans to survive and reproduce at levels faster than the more "superior" humans in respectable society, and if corrections were not soon taken, society would be awash with "inferiors." Darwin read his cousin's work with interest, and devoted sections of
Descent of Manto discussion of Galton's theories.
The eugenics movement reached a climax in
Nazi Germany where a state policy of
racial hygiene based on eugenic principles led to the
Holocaust and the murder by the German state of at least 10 million people.