In 1920, Alfred Erich Hoche and Karl Binding published "Die Freigabe der Vernichtung lebensunwerten Lebens" - "The permission to destroy life not worth living" (my translation). The main point that certain disabled people are a mere "ballast" on society and that there should be a mechanism to legally kill these people. They argued from an economic standpoint, not from a true eugenics standpoint - heridarity of conditions was not their focus. Still, this text was widely and positivly received by the eugenics movment in Germany. The economic argument for murder was later used by Nazis in implementing the euthanasia murders.
during the 20ties and 30ties, there where eugenics movements in many countries around the world, and not all of them associated with the far right. Was the proposal by Binding and Hoche discussed in these movements (in their own press, at conferences etc.)? If so, can we say that the reception was rather critical, or approving of the proposed murders?