Young Black Girl On The White Bed

The term black people is used in systems of racial classification for humans of a dark skinned phenotype, relative to other racial groups. Different societies apply different criteria regarding who is classified as "black", and often social variables such as class, socio-economic status also plays a role so that relatively dark skinned people can be classified as white if they fulfill other social criteria of whiteness and relatively light skinned people can be classified as black if they fulfill the social criteria for blackness. As a biological phenotype being "black" is often associated with the very dark skin colors of some people who are classified as 'black'. But, particularly in the United States, the racial classification also refers to people with all possible kinds of skin pigmentation from the darkest through to the very lightest skin colors, including albinos, if they are believed by others to have African ancestry and exhibit cultural traits associated with being "African-American". Therefore, the term 'black people' is not an indicator of skin color but of racial classification.
Some definitions of the term include only people of relatively recent Sub Saharan African descent (African diaspora). Among the members of this group, dark skin is most often accompanied by the expression of natural afro-hair texture (recent scientific study notes that human skin color diversity is highest in sub-Saharan African populations). Other definitions of the term "black people" extend to other populations characterized by dark skin, including some indigenous to Oceania and Southeast Asia.