us, pelican bay, and tehachapi house all the prison gang members.angs are run by the fellows in the back, the prison gang members. >>"guys in the back" is a polite way of referring to guys locked in solitary confinement in the shu? >>yeah. (laura) i just don't want them to get too unruly. (man) let's do it really fast. they can see us, though. (laura) i know. i think people are going to start stripping or something. uhm. over here, you can see that up in cages. that's because this is what's known as the shu, the security housing unit. this is for the most violent offenders. people don't get stuck in these isolation units because of what they do on the streets they get stuck in here because of violent acts they've committed inside prison. it's amazing because we've been hearing about the power structure that goes on in the prison. people will be answering orders that come from the top. and the top means guys who are locked up here, these guys who are totally locked up in isolation. the mexican mafia, nuestra familia, texas syndicate, aryan brotherhoo