In, of all places, the Guardian, Jonathan Freedland discusses the attraction to Eugenics for mainstream socialists in the 1930s:

It is eugenics, the belief that society’s fate rested on its ability to breed more of the strong and fewer of the weak. So-called positive eugenics meant encouraging those of greater intellectual ability and “moral worth” to have more children, while negative eugenics sought to urge, or even force, those deemed inferior to reproduce less often or not at all. The aim was to increase the overall quality of the national herd, multiplying the thoroughbreds and weeding out the runts.

Such talk repels us now, but in the prewar era it was the common sense of the age. Most alarming, many of its leading advocates were found among the luminaries of the Fabian and socialist left, men and women revered to this day. Thus George Bernard Shaw could insist that “the only fundamental and possible socialism is the socialisation of the selective breeding of man”, even suggesting, in a phrase that chills the blood, that defectives be dealt with by means of a “lethal chamber”.

Such thinking was not alien to the great Liberal titan and mastermind of the welfare state, William Beveridge, who argued that those with “general defects” should be denied not only the vote, but “civil freedom and fatherhood”. Indeed, a desire to limit the numbers of the inferior was written into modern notions of birth control from the start. That great pioneer of contraception, Marie Stopes — honoured with a postage stamp in 2008 — was a hardline eugenicist, determined that the “hordes of defectives” be reduced in number, thereby placing less of a burden on “the fit”. Stopes later disinherited her son because he had married a short-sighted woman, thereby risking a less-than-perfect grandchild.

Yet what looks kooky or sinister in 2012 struck the prewar British left as solid and sensible. Harold Laski, stellar LSE professor, co-founder of the Left Book Club and one-time chairman of the Labour party, cautioned that: “The time is surely coming … when society will look upon the production of a weakling as a crime against itself.” Meanwhile, JBS Haldane, admired scientist and socialist, warned that: “Civilisation stands in real danger from over-production of ‘undermen’.” That’s Untermenschen in German.

I’m afraid even the Manchester Guardian was not immune. When a parliamentary report in 1934 backed voluntary sterilisation of the unfit, a Guardian editorial offered warm support, endorsing the sterilisation campaign “the eugenists soundly urge”. If it’s any comfort, the New Statesman was in the same camp.

Lest Canadians get smug about those evil Brits and their morally dubious theories, let us remember that our own sainted Tommy Douglas, first leader of the NDP, wrote his Master’s thesis on the subject of eugenics:

Douglas graduated from Brandon College in 1930, and completed his Master’s degree (M.A.) in Sociology from McMaster University in 1933. His thesis entitled The Problems of the Subnormal Family endorsed eugenics.[16] The thesis proposed a system that would have required couples seeking to marry to be certified as mentally and morally fit. Those deemed to be “subnormal” because of low intelligence, moral laxity or venereal disease would be sent to state farms or camps while those judged to be mentally defective or incurably diseased would be sterilized.[17]

Douglas rarely mentioned his thesis later in his life and his government never enacted eugenics policies even though two official reviews of Saskatchewan’s mental health system recommended such a program when he became premier and minister of health.[17] By that time, many people questioned eugenics after Nazi Germany had embraced it to create a “master race”.[18] Instead, Douglas implemented vocational training for the mentally handicapped and therapy for those suffering from mental disorders.[19] (It may be noted that two Canadian provinces, Alberta and British Columbia, had eugenics legislation that imposed forced sterilization. Alberta’s law was first passed in 1928 while B.C. enacted its legislation in 1933.[20] It was not until 1972 that both provinces repealed the legislation.)[21][22]