He supported eugenics and served as president of the Eugenics Society. Propaganda for the Nazi eugenics program began with propaganda for eugenic sterilization. Sterilization was often done under the ideology of eugenics. Pearson was also a proponent of social Darwinism and eugenics. Figueredo has disavowed eugenics and racial inferiority. Other researchers have criticized the Pioneer Fund for promoting scientific racism, eugenics and white supremacy. He was a strong and influential proponent of eugenics and racial hygiene. These examples raise ethical issues because of the morality of eugenics. Instead, most transhumanist thinkers advocate a "new eugenics", a form of egalitarian liberal eugenics. There was a strong connection between American and Nazi Eugenics research. DeJarnette was unsatisfied with the pace of America's eugenics sterilization programs. There is an undercurrent of racism and praise for eugenics in the book. Many leading British politicians subscribed to the theories of eugenics. However, Darrow was also critical of some eugenics advocates. Several reasons have been suggested for the killings, including eugenics, racial hygiene and saving money.