This book examines the Tulsa Race Massacre of 1921, perhaps the most lethal and financially devastating instance of collective violence in early twentieth-century America. The Greenwood district, a comparably prosperous black community spanning thirty-five city blocks, was set afire and destroyed by white rioters. This work analyzes the massacre from a sociological perspective, extending an integrative approach to studying its causes, the organizational responses that followed, and the complicated legacy that remains.