African Americans had relocated to the region after the Civil War as Oklahoma became known as a safe haven for African Americans. Between 1865 and 1920, African Americans founded more than 50 Black townships in the state. African Americans in Tulsa pooled their resources and built wealth to foster successful businesses in the self-contained Greenwood neighborhood amid Jim Crow discrimination. from May 31 to June 1, 1921, a white mob attacked residents, homes and businesses in the predominantly Black Greenwood neighborhood of Tulsa, Oklahoma and stands out as one of the worst acts of racial violence but least known. Do you think that upto date war crimes against remains least unknown ?