Helen Keller
One of the drawbacks to "The Miracle Worker" is that many people don't know anything about Helen Keller except for what is shown in the movie.
She was the first deaf/blind person to graduate from college - magna cum laude from Radcliffe. She was a critic of war, supported women's suffrage, worker's rights, birth control, and socialist causes. She helped found the ACLU and was an early supporter of the NAACP.