because i think it could -- >> i feel just fine. >> because you get all these thoughts rushing in your head. >> it's like this -- it's like this. the guy next door could be on a medication. and then they'll keep me around him for three months. and then i'll get out of prison. and i'll be him. little do i know he's a psycho killer. and i'm not. next thing you know, i'm running around with psycho killer. and they think i need medication. i don't need medication. >> under law in california state prisons, a psychiatrist cannot force drugs on any patient unless that patient meets certain criteria for being a danger to himself or others. >> they will probably discharge him like that. and there's not much we can do because he has the right to refuse medication. >> this is -- this is a crime against civilization. those bars on that window. coming up, what is considered the most dangerous place at san quentin, the exercise yard.