On Sunday, June 20, 1943, on Belle Isle, an island in the Detroit River an argument between a white and a black man turned into a fist fight and finally erupted into a full blown riot. Thirty hours later, 25 black and 9 white people had been killed. In order to prevent such violence from happening again, a study into cause and preventive factors was conducted by Earl Brown of the Public Affairs Committee, a non profit educational organization. Here a pictogram from his book ‘Why Race Riots? : Lessons from Detroit’ on how to lessen racial tension. 23 years later Detroit will be witness to the 1967 riot.