In one video clip, labelled Bitch Slap, a youth approaches a woman at a bus stop and punches her in the face. In another, Knockout Punch, a group of boys wearing uniforms are shown leading another boy across an unidentified school playground before flooring him with a single blow to the head.

In a third, Bank Job, a teenager is seen assaulting a hole-in-the-wall customer while another youth grabs the money he has just withdrawn from the cash machine.
Welcome to the disturbing world of the "happy slappers" - a youth craze in which groups of teenagers armed with camera phones slap or mug unsuspecting children or passersby while capturing the attacks on 3g technology.