From the web site of the United States Holocaust Memorial Museum:
"On July 14, 1933, the German government instituted the "Law for the Prevention of Progeny with Hereditary Diseases." This law called for the sterilization of all persons who suffered from diseases considered hereditary, including mental illness, learning disabilities, physical deformity, epilepsy, blindness, deafness, and severe alcoholism. With the law's passage the Third Reich also stepped up its propaganda against the disabled, regularly labeling them "life unworthy of life" or "useless eaters" and highlighting their burden upon society.
The term "euthanasia" (literally, "good death") usually refers to the inducement of a painless death for a chronically or terminally ill individual. In Nazi usage, however, "euthanasia" referred to the systematic killing of the institutionalized mentally and physically disabled."
Disabled folks in the US may think that election laws which now make it more difficult for them to vote were created by mistake, and that there were just a bunch of errors made, state after state. Maybe. Maybe not. Those persons and their supporters had better fight as if their lives now depend on the repeal of these laws, which (in this political climate) may be the case...