The closely defined layouts of estates, and their tendency to house the poorest people, lend themselves to inverse snobbery. You have estate-linked gangs, whose members go to estate-linked schools, defining their identity by the name and "reputation" of that estate. Because their lives revolve around those estates, their perspective narrows with each day that passes, until it stops at the bollard-tipped end of the walkway.
Localism, community cohesion, a sense of place and of belonging to it? Or have we stopped banging on about the anomie of modern life, the way in wihch a sense of identity is destroyed by a rampantly consumer society?