Mary Church Terrell was a civil rights activist and suffragist, as well as one of the first African American women to earn a college degree when she graduated from Oberlin College in 1884. She went on to become the first president of the National Association of Colored Women, as well as a founding member of the NAACP.
She's also a well-known feminist writer with powerful works such as "A Plea for the White South by a Colored Woman" and "A Colored Woman in a White World."
Source: https://fairygodboss.com/career-topics/famous-black-feminists