As JTP says, yob culture has been round for many many years. Even further back than any of us can recall. It is a general disregard for common decency and this can span from drunken city executives being obscene and abusive to restaurant or bar staff, to parents threatening teachers who reprimand their children, to violent football thugs and teenagers on the rampage in your local High Street.
This is a civilised society. Perhaps a more savage species was one where we used to rampage throughout the country feuding and abroad waving swords, declaring war, killing anything in our way, raping, pillaging and enslaving any women and children who might be worth a few bob. In those days, the more heads you chopped off, the more wealth and land you owned � and if really good at chopping off heads you earned a knighthood.
Have we really changed that much? Or are we just leading by modern example? Are we not all guilty in some way of advocating the belief that to be anything in this life you need to be rich and famous? If you can�t do that legally (you know� talent, hard work, perseverance, career, luck, winning X-Factor/Big Brother etc) then the only other way to emulate this is by illegal means. The East End in the 60�s was terrorised by the Kray twins et al. Now they are folk heroes, what does that tell you?
As said above, many young people grow up to believe that things are 'given'. You shouldn�t have to work hard to gain anything, and if you break the law to get something that you believe should be yours, then it must be the fault of someone else. Parents will often agree that it is the police/government/local authority but never themselves.