How a 1921 Mob Destroyed America's Richest Black Neighborhood

What happened in Tulsa, Oklahoma, in 1921? A mob of 10,000 whites descended on Greenwood, the richest black neighborhood in America, after a black teenager on his way to a blacks-only bathroom stepped on the foot of a white elevator operator. The same flimsy pretext was used for a town's destruction, including the Florida Rosewood Massacre only two years later.