. >> we have never heard a more extreme account of gassing as the one described by kentucky state penitentiaryohnson. >> i asked everybody on the wall to [ bleep ] in a bucket. send it down to me. and i would take, two, three, light bulbs, put it in some toilet paper, step on it, break it in some little fragments, so when i throw it on them, they wipe it, it will cut into them and get in their blood. and i was standing there with a big old bucket of it and throw it in their face. they would just go nuts. and so the corrections finally made a law that made it a felony. and then that's when i stopped. >>> coming up on "lockup: raw," the most violent confrontations behind bars. cell extractions. >> they tell you to back up to the door. if you back up, you're a bitch. try poligrip for partials. poligrip helps minimize stress which may damage supporting teeth by stabilizing your partial. care for your partial. help protect your natural teeth. good job! still running in the morning? yeah. getting your vegetables every day? when i can. [ bop ] [ male announcer ] could've had a v8. two full servings o

a deal's a deal. >> back at kentucky state penitentiary, randy haight made it clear. he's not as eager to face death as holton. but he's ready for it, nonetheless. >> i'm extremely sad for what i've done. it hurts me knowing that i went to the level that i went. and if there was any way possible for me to be healed or correct it, believe me, it would be done. it's an impossible situation not only for me but for everybody involved, you know? and i'm not saying that to get out of an execution or -- because like i said, i'd ready. if you want to kill me, let's go. i'm ready to go. but i think that i have something i can offer somebody. and i don't think it's really time for me to die. >>> due to mature subject matter, viewer discretion is advised. >>> msnbc takes you behind the walls of america's most notorious prisons into a world of chaos and danger. now, the scenes you've never seen. "lockup: raw." >>> this is the hardest part because you're in here with very little to do. you sleep. and you eat. and you sleep some more and you eat some more. >> it is a life of profou

still, there are those inmates like alex bennett, at the kentucky state penitentiary, who don't alwaysor abide by the rules. >> i'm a person that's been in the joint all my life. i've been told i'm pretty hard-core. and i need a certain type of environment. you got something you want to say to me now? we can get it on national tv here. do you? >> everything about alex's mannerisms, his appearance and the words that he spoke said convict. alex just embodied that. >> bennett was 54 years old when we met him and had spent 33 of those years behind bars for armed robbery, kidnapping and murder. >> the system today isn't like the system that i came into 36 years ago. the system today has the majority of their inmates programmed to do what they're told when they're told to do it. and so, they get to the point where they expect that from everybody. well, there's still a few old dogs around, who like to do things their own way. >> bennett's way of doing things, however, has had horrifying results. after adapting to life in a single-person cell here, he was transferred to a lower security prison

. >>> at kentucky state penitentiary, some inmates can apprentice in an auto body shop. at rikers island jail, a bakery churns out nearly 90,000 loaves of bread per week while teaching inmates how to bake. in many of the prisons profiled on "lockup," inmates have opportunities to learn skills that can help them find work on the outside. but all too many spend their time honing skills more suitable to mayhem and murder. >> i stabbed an inmate 12 times over some dope in front of the chow hall. >> i took a knife and stabbed him with it three or four times until he was dead. and then i butchered him with it. >> you find a piece of metal or something, file it down on the concrete. it ain't got to be sharp, it's just got to have a point. put your handle on it and do what you need to do. >> "lockup" crews are regularly exposed to the tools of a deadly trade. >> you know, in every prison we film in, there's always a shank museum, a place where the authorities display all of the weapons that are confiscated by staff. homemade weapons the inmates have made from bed springs or melt

> when we met matthew campbell he was serving 12 years for armed robbery and assault at kentucky state penitentiary. but his troubles began much earlier. >> first time i went to jail, i was 15 years old, at ferndale elementary school, and pretty much downhill from here. >> as an openly gay man, campbell's time behind bars has had its challenges. >> being gay in prison is really hard. it is hard enough. your time in here. but the fact that everybody knows that you are gay, it is constant pressure for, you know, sex. >> you have a lot of people here that now that they're in prison they resort to what they have to as far as sex. i have to say there is very few people here who are gay on the streets and gay in here as well. there is a lot of people that say they don't mess around, but when they get you by their self, it's like, hey, man, what's up? >> one of the things that struck me about matthew how comfortable he was in his own skin. here is an openly gay inmate in a southern prison. and he didn't have any problems with it. when we went out to the yard to get roll with matthew playing a game, it was