When I refer to myself as a Native Black American, what I am speaking of is as following:
My ancestors are the humans that where in slaved in the USA. We are not the same people you find in Africa. In fact, you will not find any group on this earth that has the customs, beliefs, sentiment, culture and practices of those who are the children of the black people who were in slaved in America. It is a fact that my race began in the USA, therefore, I proudly call myself a Native Black American.
I have never been to Africa, nor has my parents, grandparent, great grandparents... We do not speak any traditional African languages or practice African culture, religions or way of life in general. The larger majority of African people do not consider Native Black Americans Africans, as our way of life are completely different.
The fact remains that Native Black Americans are an ethos race that begin in the United States of America. Native Black Americans are a relatively new race of people that developed their own fundamental character of spirit, of culture, of customs, of practices and society that is unique to Native Black Americans.
The underlying sentiment of who we are as a people was born in the USA. Therefore, we are Native Black Americans!
Hope that help educates you and other on who Native Black Americans are.