In this 1919 photo provided by the Chicago History Museum, a crowd gathers at a house that has been vandalized and looted during the race riots in Chicago. Some of the crowd is posing inside broken windows, others are standing on the lawn. Red Summer, as the summer of 1919 came to be known, saw white-on-black violence in big cities like Washington and Chicago and small towns like Elaine, Ark., and Bisbee, Ariz. (Chicago History Museum/The Jun Fujita negatives collection via AP)