Name some changed perceptions about people with disabilities

Back then, these individuals had no rights and were treated like absolute trash, far less than human. These individuals would drop off their children in institutions that had disgusting living conditions (e.g.. Willowbrook Institution) or just leave them out on the streets to fend for themselves. However, in today's perspective, these individuals have more rights than they did back then. They are considered more human and now have a voice in their own affairs, sometimes the government is in charge of some of these individuals.