IncognegroIn 1995, a South African journalist informed Frank Wilderson, one of only two American members of the African National Congress (ANC), that President Nelson Mandela considered him "a threat to national security." Wilderson was asked to comment. Incognegro is that "comment." It is also his response to a question posed five years later in a California university classroom: "How come you came back?" Although Wilderson recollects his turbulent life as an