After the war, the United States experienced the greatest era of gang activity ever seen. Gang fighting rose to an all time high in cities like New York, Philadelphia, Boston, Chicago, Los Angeles, Detroit and Cleveland. Most of the gang members were in their early teens.
By this time street gangs had also developed dress codes, expected behaviors, a special gang slang and rules of conduct to follow. Part of the rules of conduct were based on respect and revenge.
The post-war era also brought forth a couple of new types of gangs. Between 1956 and 1957 prison gangs started to grow and develop within the California state prison system. Prison gangs had been identified in other states since the early 1930s.
Some military personnel who could not adapt to the postwar civilian life, star1ed a new life style. The West Coast saw the appearance of the first motorcycle gangs. Today, there are over 1,200 different motorcycle groups in the United States and Canada.
By the early 1960s, Folk Nation gangs were beginning to establish themselves in Chicago. The Black Panthers were established in Oakland, Calif., in 1968 and the