It is not clear why Europeans fixated on the skin color of Africans. Perhaps they did so simply because the physical appearance of blacks was so markedly different from their own and, regarding themselves as superior beings, most Europeans associated a series of negative characteristics with blacks. This view of blacks preceded slavery and helped to justify it. At the same time, slavery deepened racism. The two seem to have existed in tandem. - Did slavery cause racism?
Thus, where does this prejudice or bias against darker skins come from? Is there a psychological factor involved that leads to the irrational hatred of people with black skin? Not only western whites, but Asians with fairer skin also have this negative attitude towards people with black or darker skin.