Brash extrajudicial acts by authorities, in an already tense social situation, will lead to an outburst of collective fury.



Inner-city residents of Detroit :
In 1967, police raided an illegal bar in Detroit. The bar was located in a primarily black neighborhood in the inner-city where growing tension and animosity between the authorities and the citizens were fueled by economic and social inequality. Some of the 82 people under arrest who had been at the bar, feeling "confused and upset because they were kicked out of the only place they had to go" began to vandalize a nearby store. Mass riots quickly ensued and continued for 5 days during which 43 were killed, nearly 1200 injured, and 7000 arrested.
One contributing factor to the urban unrest in Detroit was the broad urban renewal initiative which tore down low-income neighborhoods and "slum" districts to be replaced with new urban housing. This resulted in the alienation and marginalization of the former residents of these areas, primarily black, who felt victimized and criminalized in their own back yard.


http://www.67riots.rutgers.edu/d_index.htm