Even in an age of heated rhetoric, there are terms most people simply don't use anymore.
But even the U.S. Supreme Court once subscribed to a scale of intellectual impairment that included terms like "moron," "idiot," and "imbecile." In fact, the court once backed the state of Virginia's decision to sterilize a young woman.
Lawyer and writer Adam Cohen wrote about the case in his book Imbeciles: The Supreme Court, American Eugenics, and the Sterilization of Carrie Buck.
This is a replay of our 2016 interview with Adam.