Why it matters: 40 years after its official creation in 1983, ADAPT's nonviolent, direct action tactics have inspired a nationwide movement, with 36 active chapters in 25 states.
Go deeper: See iconic photos from the last four decades of ADAPT's struggle for disability rights in Denver and nationwide.
Why representation matters, according to movement photographer Tom Olin:
Most "look at people with disabilities like 'poor thing'; it's real important for groups to say, Hey we're strong! We need photos [that show that]," Olin tells Axios.
"I was at an action and there were three photographers taking the same shot. When I saw the newspaper and I saw their shots, [for] one photographer, the chair was the most important thing, [as] the symbol of disability. I was more focused on that person's face, how he exuded that power that came from being oppressed for so long."
Tom Malone and Shaila Jackson (below, left photo) and 8-year-old Jennifer Keelan-Chaffins (right), were among the protestors who crawled up the U.S. Capitol steps to persuade Congress to pass the Americans with Disabilities Act.
Years later as an adult, Keelan-Chaffins mused "it was the image of me climbing those steps that was the final decision to get the ADA passed."