Nearly all your historical statements are wrong.Everybody by now should know black people was the first humans one earth. Nature has kept parts of the mother country, africa, in many areas tribal and unchanged so that we can witness and understand where we all came from and how all humans came to be at this present time. If we didn't have africa to reflect on we all would be lost sheeps!
True, the first arabs were black, such as from areas as Timbuktu which were the place to be in ancient times. People came from many other countries to be learned men at Timbukto university.
India is another country which were black nubian people and they're still pretty much black just evolution has changed them as it has all races on earth!
The Chinese DNA study confirmed that Chinese evolved from OOA migrants rather than indigenous Homo erectus. It did not say they were Africans, any more than any other Eurasians. By not understanding that study, you confirm that you are not educated in these matters and are talking out yer ass.
Indians likewise were not Nubians or any other Africans, they are 100% OOA migrants just like the Chinese.
Lose the Afronazi cult beliefs and get a real education.