>> a group of teenagers calling themselves the 311 boys held knock down, drag out fights. these graphic pictures of kids beating each other to a pulp are solely for entertainment. their intended audience the internet. the setup is eerily similar to the 1999 flick "fight club" starring brad pitt and edward norton. this is no hollywood movie. what makes it so shocking is these scenes appear to be well-cared-for kids from anywhere usa. clark county district attorney chris lawrence. >> i was really struck by the abject disrespect and disregard for human life. we saw people being stomped. people hit by hammers. people getting kicked in the head. it was horrific and it terrified me.