if they are not openly having sex, and understand you can have a relationship that doesn't have sex involved. >> but mason believes it is the lack of sex that leads to the unrest among inmates. >> that frustrates these dudes. there is not a man that i know from eight to eight right now that wakes up and don't have an erection in the morningtime because that's what happens. we are dealing with reality. when a man wakes up. first thing that comes to the man's mind, damn, i miss my wife. >> but behind bars, sex can be a combustible concoction of desire, desperation, homophobia and predatory behavior. especially at prisons as notorious as california's pelican bay. >> this is the last place they need to be sending a flamboyant homosexual, is pelican bay. >> inmate adolph green was out on the pelican bay yard when our producer noticed him and asked for an impromptu interview. >> i'm a flamboyant homosexual.