Do you have some data to back any of this up? I feel that reducing the wast amount of people to a single variable based on skin color, doesn't add up. Even from

Do you have some data to back any of this up? I feel that reducing the wast amount of people to a single variable based on skin color, doesn't add up. Even from my completely uneducated perspective I couldn't generalize people from different parts of Africa, let alone other places.