What is the fine-grained topic of the following text: He reviews the early constitutional efforts to permit African Americans and women to vote, recounts the court case of Milwaukee black leader Ezekiel Gillespie who sued the state in 1866 for the right to vote, the history of the woman's suffrage movement (including personal recollections of Olympia Brown), and the passage of the first comprehensive equal rights law in 1921. Only return the topic.
History of voting rights for African Americans and women in the United States