It’s important to note that while Darwin’s Theory Of Evolution certainly did lay the groundwork for eugenics, it was subsequently honed and refined by many people in far flung places from its origin.
Many members of the United States academia set up the sterilization solution to weed out ‘bad genes’.
However, this alone did not allow for the travesty of Hitler’s Germany. After all, God was still the overseer. No matter how man might have come to be, God still presided over all. Not so, according to Friedrich Nietzsche, who proclaimed ‘The Death of God’ and the dawn of nihilism.
It was these divergent developments that gave Hitler and his cadre the intellectual hammer with which to smash the order of humanity and bring in a new age of death and destruction.
Leonard Darwin was the president of the Eugenics Society. Many winners of the Darwin Medal were eugenists. Look at my FR profile page.