Apparently one of the latest fads in England (I can remember when the biggest "threats" emerging there were the Beatles, then later on the Sex Pistols).
Someone needs to reopen London Tower to accommodate these assholes.
http://en.wikipedia.org/wiki/Happy_slapping"Happy slapping is the term used to describe the phenomenon of one or group of people slapping or striking a stranger while an accomplice films the assault using a camera phone or smart phone. It is said to have first become popular in South London, but has spread across the United Kingdom. Although the concept of filming a crime is an old one, the use of video cameras in mobile phones means that such attacks need not be planned carefully beforehand and are more easily watched and circulated afterwards. Some commentators alleged the craze is inspired by television programmes Jackass and Dirty Sanchez. Others have treated the issue as a moral panic which inflates its importance by creating a national scare.
Happy slapping can often become more violent than a mere slap. Sometimes the assault is performed with other crimes, such as mugging and rape. Variations of the "happy slap" have been reported in Northern Ireland, where groups of youths have filmed vicious attacks on firecrews. Two youths were convicted for setting fire to a man during a "happy slap" in 2005. On 8 June 2005, it was reported that a 17-year-old girl was shot with an air rifle and filmed in Wortley area of Leeds, Britain. On 18 June 2005, British police arrested three 14-year-old boys for the suspected rape of an 11-year-old girl who attended their school. Authorities were alerted when school staff saw footage from the students' mobile phones.
Google link to examples and news reports