Afrofuturism in my view can be renamed Negro Science Fantasy Fiction but the definition to either word or term is the same, in my view, works from black  , phenotypical range, authors throughout humanity regardless of geographic ancestry that involve elements  of science fiction or fantasy, with usually, not always, a majority of black characters.  Now I placed a collection of Africanfuturism, the term potentially first coined by Nnedi Okorafor < https://twitter.com/Nnedi , I have not ch