Greenwood is a historic freedom colony in Tulsa , Oklahoma . As one of the most prominent concentrations of African-American businesses in the United States during the early 20th century , it was popularly known as America 's " Black Wall Street " until the Tulsa race riot of 1921 , in which white residents massacred as many as 300 black residents , injuring hundreds more , and razed the neighborhood within hours . The riot was one of the most devastating massacres in the history of U.S. race relations , destroying the once thriving Greenwood community
Tulsa race riot
Tulsa race riot
Greenwood, Tulsa