In A Realist Metaphysics of Race: A Context-Sensitive, Short-Term Retentionist, Long-Term Revisionist Approach, Jeremy Pierce defends a social kind view of racial categories. On this view, the biological features we use to classify people racially do not make races natural kinds. Rather, races exist because of contingent social practices, single out certain groups of people as races, give them social importance, and allow us to name them as races. Pierce also identifies several kinds of context-sensitivity as central to how racial categorization works and argues that we need racial categories...