The term Tulsa Race Massacre has largely replaced the Tulsa Race Riot label in Oklahoma. Now it will be applied in libraries worldwide. The move was announced by the Library of Congress after librarians at University of Oklahoma lobbied for the change. The librarians had to demonstrate the term was being used more widely and that ‘massacre’ was more accurate than ‘riot.’ The Tulsa Race Massacre occurred over several days in 1921 when a mob of white people destroyed businesses and killed an untold number of Black people in Tulsa’s Greenwood District.