We Wuz Kangz
There was no such thing as black English
Black people had a different grammar in their native language before they be forced to learn White Anglo Saxon Protestant English
They be keeping that grammar so it not be different language
It original Kangz language
A black social "scientist" said that they are using the grammar from their ancient place of origin so you should not call it black English because it is actually their own legitimate language and not an improper language
They took English vocabularly but the grammar is from black countries so it is black
So it is neither legitimate English in terms of grammar nor their ancestors native language in vocabularly & he is wrong
He is wrong it is English with black gramnar