Question: In which year did this American voting rights activist, a leader in the Civil Rights Movement, and philanthropist, who wrote an autobiographical essay on the aftermath of the lynching of Joe Pullen, represent her party at Democratic National Convention?
Sentence (from "Joe Pullen"): Joe Pullen or Joe Pullum (c. 1883 - December 15, 1923) was an African-American tenant farmer who was murdered by a lynch mob of local white citizens near Drew, Mississippi on December 15, 1923.
Relevant evidence: No