There are mainly three types of people in prison. The first type is gang members. These people make up the majority of the prison inmates and are also the most "indestructible" group. No matter the era or who is in power, these people are always the majority in prisons.
The second type of people engages in relatively trendy criminal activities, mostly related to deceit and fraud. These individuals are not gang members, and the reason they ended up here is not because of what they did but because they were not careful or cunning enough and got caught by the police or investigators.
The third type is basically absent in Sabin City area prisons. These people have not committed any crimes and can leave prison anytime.
