An armed society is a polite society; a disarmed society is....
From The Guardian:
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Bank Job, a teenager is seen assaulting a hole-in-the-wall customer while another youth grabs the money he has just withdrawn from the cash machine.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.
According to police and anti-bullying organisations, the fad, which began as a craze on the UK garage music scene before catching on in school playgrounds across the capital last autumn, is now a nationwide phenomenon.
And as the craze has spread from London to the home counties to the north of England, so the attacks have become more menacing, with increasing numbers of violent assaults and adult victims......
UPDATE: here's a webpage with those wonderful videos of guys beating up people while recording the action for uploading.