The event that caused the destruction of America's "Black Wall Street" in 1921 resulted in how many deaths according the American Red Cross?
Greenwood, Tulsa:  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 the Oklahoma state government with the assistance of Tulsa's white residents massacred hundreds of black residents and razed the neighborhood within hours. Tulsa race riot:  The Oklahoma Bureau of Vital Statistics officially recorded 39 dead, but the American Red Cross estimated 300, a number supported by historians since then.
300