Social Darwinism, really? I thought that went out of style with eugenics.
It is a monstrous ideology that has produced nothing but suffering.
Have a great day.
Peace and have a great day (and an upvote).
I recommend Asimov's article on the matter: http://chem.tufts.edu/AnswersInScience/RelativityofWrong.htm
It is not a stretch to think that natural selection could apply pressure to traits that are passed on through culture and exposure to ideas.