Before Rosa Parks, There Was Claudette Colvin

Claudette Colvin was the first person arrested for resisting bus segregation in Montgomery, Alabama, preceding the better known Rosa Parks incident by nine months. For a long time, Montgomery's black leaders did not publicize Colvin's pioneering effort because she was a teenager and became pregnant while unmarried. Given the social norms of the time and her youth, the NAACP leaders worried about using her to represent their movement.

http://www.biography.com/people/claudette-colvin-11378