A pioneer of second-wave feminist and postwar black nationalist aesthetics—whose lasting influence was secured by her iconic reclamation of the Aunt Jemima figure in works such as The Liberation of Aunt Jemima (1972)—Betye Saar began her career in design before transitioning to assemblage and installation. 
Senga Nengudi emerged as part of a group of avant-garde African-American artists active in Los Angeles and New York in the 1970s and 1980s.
American history is not so easy to digest sometimes, it's painful and brutal. I believe this memorial and others like it will allow us to remember the past, not relive it nor repeat it. See the link below for details.