I guess it's trending somehow now to float closer to the surface of the mainstream, because this stuff has always been there, interestingly using the same methods both in english and french : some dude spamming message boards with walls of text pasted from some afrosupremacist site, generally obsessed with superficial shaky "analysis" of paintings & statues (Olmec faces, egyptian busts) to prove the anteriority of black civilization, sometimes to absurd lengths (Europe was really ruled by black skinned aristocrats up until the middle ages !) as a knee-jerk reaction to Euro-centric history.
I guess go look at a summary of the work of Senegalese historian Anta Diop because really it's just a rehashing of that without the actual scientific credentials.