The oldest of eight children, Ida B. Wells was born in Holly Springs, Mississippi. Her parents, who were very active in the Republican Party during Reconstruction, died in a yellow fever epidemic in the late 1870s. Wells attended Rust College and then became a teacher in Memphis, Tennessee. Shortly after she arrived, Wells was involved in an altercation with a white conductor while riding the railroad. She had purchased a first-class ticket, and was seated in the ladies car when the conductor ordered her to sit in the Jim Crow (i.e. black) section, which did not offer first-class accommodations. She refused and when the conductor tried to remove her, she "fastened her teeth on the back of his hand." Wells was ejected from the train, and she sued. She won her case in a lower court, but the decision was reversed in an appeals court.
Wells wrote many pamphlets exposing white violence and lynching and defending black victims. In 1895 she married Ferdinand Barnett, a prominent Chicago attorney. The following year she helped organize the National Association of Colored Women. She was opposed to the policy of accommodation advocated by Booker T. Washington and had personal, if not ideological, difficulties with W.E.B. Du Bois. In 1909, she helped found the National Association for the Advancement of Colored People. Wells-Barnett continued her fight for black civil and political rights and an end to lynching until shortly before she died.
Source: http://www.pbs.org/wnet/jimcrow/stories_people_wells.html