All Hell Broke Loose: American Race Riots from the Progressive Era Through World War II - Hardcoverby Ann V. Collins (Author) The United States has a troubling history of violence regarding race. This book explores the emotionally charged conditions and factors that incited the eruption of race riots in America between the Progressive Era and World War II. While racially motivated riot violence certainly existed in the United States both before and after the Progressive Era through World War II, a thorough account of race riots during this