Who are chavs?

Urban dictionary says the following about chavs:

“Chavs can be found the length and breadth of the country, hanging around any junk food outlet, off licence or just hanging around the streets, where they pass the time by vandalising property, drinking cheap cider, shouting abuse at passers by and terrorising old people.

Appearance: Chavs have a strict dress code. Designer labels are everything, although knocked off/fake items are almost de-rigeur. Typically, the male chav will wear a Nickelson or Schott hooded top, baggy tracksuit trousers, white designer trainers, and a baseball cap by burberry or Nike.”

Frisky fans reviewer Jay North expands on the subject in his review of Dirty Fuckers from the Rude Boiz studio.