My grandmother's Cherokee land allotment abutted
this neighborhood. I heard lots of stories about these riots passed down in my family. After the Civil War, advertisements were placed in Southern newspapers soliciting African Americans to go to Indian Territory, where there were then (and still to this day--just a 'little' different) all white towns, all Native American towns, and all AA towns. Indian Territory was supposed to be the American equivalent of Soweto, SA, where all the 'minorities' were neutralized in one area of the country. My father spoke of a man who mounted a Gatling gun on top of a building and mowed down demonstrators in this holocaust. The Greenwood community never recovered.
Edited to add: When oil was discovered in Indian Territory, that made the land worth something, and when it became valuable whites did everything they could to get it back. Many of these black entrepreneurs were mixed blood native americans.