"chavs" are those people who in more enlightened times would be found in service to respectable families. The bootblack, the gardener's boy, the scullery maid; the hard work and firm rules of the household would enable these pitiful creatures to live decent lives. Nowadays they are left free to roam their neighbourhoods and express their "personalities" through vile untramelled behaviour and ridiculous garments. Those who have somehow mastered basic literacy use "social media" to extend their grim lives into cyberspace.