Tulsa wasn't alone. There were dozens of massacres

After the Civil War, and especially after WWI, in states from New York to California. 1919 was especially bloody when it came to white mob violence, so much so that it was known as Red 1919. Here is an interactive map of some of the bloodshed.

https://www.cnn.com/interactive/2021/05/us/whitewashing-of-america-racism/