From The National Museum of African American History and Culture (NMAAHC):

It has been 100 years since the thriving African American community of Greenwood in Tulsa, Oklahoma, suffered the deadliest racial massacre in U.S. history. While the precise number of lives lost remains unknown, we know that on May 31 and June 1, 1921, mobs of white residents destroyed more than 35 blocks of Greenwood and left about 10,000 African Americans homeless. Known as “Black Wall Street,” Greenwood was the wealthiest Black community in the United States at the time.

You might be interested in MAY 31ST & JUNE 1ST WERE THE DATES OF THE TULSA RACE MASSACRE – HERE ARE TEACHING & LEARNING RESOURCES.