During the Victorian era in England, Sir Francis Galton, FRS FRAI, was a statistician, sociologist, psychologist, anthropologist, tropical explorer, geographer, inventor, meteorologist, proto-geneticist, psychometrician, and proponent of social Darwinism, eugenics, and scientific racism.
The most famous example of the impact of eugenics and its emphasis on tight racial discrimination on such "anti-miscegenation" legislation is Virginia's Racial Integrity Act of 1924. In Loving Virginia, the United States Supreme Court overturned the law, holding that anti-miscegenation laws were unlawful.
Many states initiated non-consensual tubal ligations of white persons deemed unfit to breed by the state, particularly the impoverished, crippled, and ignorant. Around the 1920s, eugenics became popular in America to assist the white race grow stronger, and many states began non-consensual tubal ligations of white people the state deemed unfit to reproduce. Even during twentieth century, political authorities were convinced by the professional authority of scientists who had joined the eugenics movement and passed legislation concerning birth control, marriage restriction, and separation.