book, inmates in disciplinary segregation are allowed no personal possessions or any other privileges. they even have their mattresses removed during the day. >> what is the purpose of taking your mattress? that's just torture. this is what little bit of stuff they leave you with. they take all your clothes and [ bleep ] leave you with two t-shirts, two pair of boxers. i got my toilet tissue wrapped up in here to use as a pillow. and i wrap that all up in my bag. use that as a pillow. >> the main goal is voluntary compliance or disciplinary segregation does gain compliance. they might think about it the next time before they break a rule in the jail. >> and bell admits that segregation has had an impact. >> i ain't doing [ bleep ] in jail. nothing. i'm staying in my lane. i'm not associating with nobody else in jail. i ain't having no conversations with anybody else in this