san quentin, even at sny where gang dropouts are housed. >> sny is sensitive needs yard, used to be called protective custody. it's an area where inmates can be housed because of safety concerns. they're either gang dropouts, identified by the inmate population as informants, have sex crimes in their past, things like that. they still have that predatory mentality, just being a protective sensitive needs type guy doesn't make them a good guy. there's absolutely gangs in sny. there's fistfights going on. there's guys getting beat up pretty good. >> i have sufficient grounds to keep you in ad seg. >> gang expert lieutenant munoz was called in to check on an inmate after he was attacked in his tier at sny, most likely a gang-related attack. >> we believe that you may have been the victim of a battery, and until we find out who the assailant or assailants are,