The Red Summer of 1919 refers to a series of race riots that took place in dozens of cities across the United States. On this day that year, Washington, D.C. endured an ugly race riot that left dozens dead and several more injured. As World War I was becoming a memory, many former military men, […] During the summer of 1919, racially-charged attacks against African-Americans rose heavily in 26 United States cities. This time period came to be labeled by James Weldon Johnson and the NAACP as the Red Summer.