Richardson first joined the
NAACP as a teenager in the 1940s, working in the
anti-lynching movement and against
racial segregation. She rose to become president of the Louisiana State Conference of the NAACP for sixteen years. Richardson was also active in the NAACP's national governance, serving on the NAACP board from 1981 to her death, as the NAACP vice president from 1984 to 1991, and as the president of the NAACP from 1992 to 1995. After leaving the presidency in 1995, Richardson was made
president emerita of the NAACP. From 1999 to 2008 she chaired the NAACP's Health Committee, which she had advocated for the creation of, focusing on
HIV/AIDS in the United States among minority groups. Towards the end of her life, Richardson remained active in civil rights, advocating on behalf of the
Jena Six in 2006 and 2007. She was known as the "grand dame" of the organization;
Julian Bond, an activist at the NAACP, said that "Rupert Richardson was in many ways the conscience of the NAACP". == Rupert Richardson Memorial Leadership Award==