Gang members who go to jail just come out more violent than ever. And the ones left on the streets continue their vendettas against each other's rivals and against innocent people. There needs to be another solution, one that educates and models different types of group activities and ways to solve conflicts.
Many people keep doing many horrible things after prison they think that they are much more cooler than before because they have been to prison. They also think that their appearance is much tougher because they have been to jail. Those gang members have a famous quote of saying " I'm not afraid of the cops, I have been yo jail before. I'm not afraid to go again."