The purpose of this activity is to help students in survey (Introduction to Sociology, Social Problems) or Race and Ethnicity courses understand that racial classifications are socially and legally constructed. This activity begins by outlining how students perceive race initially and then demonstrates how understandings of race in the United States have changed over time. In Part I, the instructor leads a class discussion that establishes the baseline for student’s understanding of race. Part II introduces a guided activity in which students will act as Census Enumerators and sort photos of famous individuals into census categories according to decisions of historical Supreme Court cases. Last, in Part III students will return to their original conceptions of race and discuss how the activity has impacted their understandings of race.