This is a fascinating speech by War Against the Weak author Edwin Black who also wrote IBM and the Holocast.
It was an interesting dissertation about the English and American origins of Eugenics in the Hitlerian style. What was conspicuous to me though was that there was no mention of the terms Fabian, Socialist, or Progressive; even though he named many of the most important people in those movements. It almost seems like a conscious omission. He even answered a question whether the eugenics movement still existed by saying "Yes, in the Aryan Nation". That is a prison gang and of no general influence in the outside world. Later, he calls in and answers a question about whether socialized medicine has eugenic impact by stating emphatically that "no, only national policy would do that", completely ignoring that rationing would accomplish exactly that while all would be benignly blaming economics; and further ignoring that the elites will always have the best access to medicine whether they are corporate giants or powerful and connected politicians thus naturally selecting themselves and their kin and ilk.
WARNING: This is an hour and three minute long video. You should watch but it is long.