Link: https://thearc.org/
The Arc is the largest national community-based organization advocating for and serving people with intellectual and developmental disabilities and their families. We encompass all ages and more than 100 different diagnoses including autism, Down syndrome, Fragile X syndrome, and various other developmental disabilities. The Arc promotes and protects the human rights of people with intellectual and developmental disabilities and actively supports their full inclusion and participation in the community throughout their lifetimes.