AbstractGiven the long history of contention over the meaning of race and the continued discomfort about what role it plays in the structure of inequality, I endeavor to clarify the origins of the association of race with skin color and other physical features by briefly discussing the historical record by which race became codified in law. My focus is the U.S. and specifically Colonial Virginia, where the codification of racial categories in law was especially consequential. I also discuss the existence of a racial hierarchy in which Whites are dominant and Nonwhites of various types are subordinate. I argue that the continued existence of this racial hierarchy not only has a legacy from the past, but it is reproduced in the present and continues to have major effects on the life chances of those thought of as belonging to different racial groups. I also discuss the elasticity, ambiguity, and contested nature of racial classifications, as well as the internal differentiation among those thought to belong to the same racial groups and the changes and variations over time that are continually remaking the meaning of race. Because of the political significance of race, I also clarify the meaning of key concepts that have been receiving recent attention: White privilege, White supremacy, and White colorblindness. Finally, I discuss race as a process rather than as a classification and briefly discuss how Whites and men can become allies, advocates, and activists in support of social justice.