This is a much disputed area and while almost everyone agrees that there is/are problem(s), there is no "solution" which everyone can agree on. It is basically a matter of culture in the most general sense because (as Buenchico points out) there are those who adopt ways of life that are not only destructive to society but also even themselves and their family - as someone said, being a yob becomes de rigueur. There are now families with several successive generations set/trapped in this way of life.
These are locals but what is interesting is that when immigrants arrive with their culture (which they pass down the generations, 2nd and onward) that leaves them sharply more "successful", the criticism, ostracism and outright hostility to them comes from quite a wide section of society. Suddenly, those who previously worried/complained about the "wasters" become kinsmen with them and turn their fury against those who have the qualities that they would want to see in the yobs, holding down a job, working hard, paying their taxes and generally getting on in life. Odd, isn't it ?