The Tulsa Race Massacre, also known as the Tulsa Race Riot, took place on May 31 and June 1, 1921, in the Greenwood district of Tulsa, Oklahoma. Greenwood was a thriving African American community often referred to as "Black Wall Street" due to its prosperity and self-sufficiency.

The massacre began when a black man, Dick Rowland, was accused of assaulting a white woman in an elevator. Rumors and false reports quickly spread, leading to a white mob gathering outside the courthouse where Rowland was being held. As tensions escalated, violence erupted, with white mobs targeting and attacking the black residents and businesses in Greenwood.

Homes and businesses were looted and set on fire, and hundreds of African Americans were killed or injured. The National Guard was called in, and martial law was declared, but the violence continued for nearly 24 hours.

The exact number of casualties is still unknown, but it is estimated that up to 300 people were killed, and more than 1,000 homes and businesses were destroyed. Thousands of African Americans were left homeless and displaced.

The Tulsa Race Massacre was one of the most severe incidents of racial violence in U.S. history, but it was largely omitted from history books and not widely discussed for many years. It was not until the 1990s that efforts were made to uncover and acknowledge the events of the massacre, and in recent years, there has been a renewed focus on educating the public about this tragic part of American history.