Virtually all eugenicists supported compulsory sterilization for the unfit; some supported castration. By 1936, when expert medical panels in both England and the US finally condemned compulsory eugenical sterilization, more than 20,000 forced sterilizations had been performed, mostly on poor people (and disproportionately on black people) confined to state-run mental hospitals and residential facilities for the mentally retarded. Almost 500 men and women had died from the surgery. The American Eugenics Society had hoped, in time, to sterilize one-tenth of the US population, or millions of Americans. Based on the American eugenical sterilization experience, Hitlerís sterilization program managed to sterilize 225,000 people in less than three years.