indoors, they learned that kern valley's dominant hispanic gang controlled the exercise session. because all their practices are shrouded in secrecy, they would not work out in front of our cameras. but they can't avoid prison surveillance cameras. >> notice right now you have what a call a cadence call. it's an exercise routine, there's a certain group of inmates that initiate it. and, therefore, the race have to follow as long as they show respect. everything in prison is about respect. >> we found another example of an inmate bridging the racial divide. when we ran into dillon dunn at work in kern valley's kitchen. >> how unusual are you here? >> in this prison i'm the only one. >> the only what? >> the only white krip. >> i think the whole crew was surprised to find out he was a crip. a white guy as a crip.