Todd wrote:

The Nazis picked the "mentally handicapped" in brightly
colored buses and promised to take them to wonderful
institutions. Then ...


http://en.wikipedia.org/wiki/Buck_v._Bell

"It is better for all the world, if instead of waiting to execute degenerate
offspring for crime, or to let them starve for their imbecility, society can
prevent those who are manifestly unfit from continuing their kind. [...]
Three generations of imbeciles are enough."

Oliver Wendell Holmes Jr. Justice, United States Supreme Court. 1927


Almost 90 years later, the US is running an imbecile farm.