In the language of the Kikuyu people of Kenya, the word kamoinge means “a group of people acting and working together.” It’s also the name of a photography collective founded in 1963, a group whose members, talented African-American artists, encouraged one another to break free from societal and racist constraints. In celebrating one of Kamoinge’s founders, the Virginia-born photographer Louis Draper (1935–2002), this exhibition showcases 150 works from the collective. —E.C.