. >> utah state inmate tony duran is well-versed in the convict code. he has spent the majority of the past 23 years behind bars for burglary, robbery, and a slew of parole violations. >> the convict code is a person that carries himself with respect. he doesn't -- he only talks to the man when he has to. you know, he don't sit there and kick it with the man. you don't tell on nobody. you don't let nobody know your business. you don't get in other people's business. you respect yourself. you respect others around you. >> but these days old-time inmates like duran all agree the convict code is changing. >> well, because the different breed of inmate that's coming to the joint now. you know? you got kids coming in here. you know, some of them are gang bangers that don't know how to carry themselves. and some of them, they just don't give a [ bleep ] about respect or nothing like that. >> we discovered the proliferation of gangs at every prison we profiled. and utah is no exception. but nowhere are prison gangs more powerful, dangerous, and faster growing