According to Who? -
Race is a socially accepted categorization of humans based on physical appearance. Rather than emerging from a scientific perspective, race, is informed by historical, social, cultural, and political values. According to Who? is an exhibit, book, and on going graphic language that aims to encourage thought around the question; who assigns meaning to race?
When someone says race, they are only talking about the phenotypical, or physical appearance of a human. The issue with this construct is that humans use race to prescribe identities based on differing appearances that have no scientific merit. This is the basis for racist ideologies.