It sucks because ignorning them allows them to continue!
Having said that what else can you do? - They've already messed up their lives so for them to attack & abuse you and get a criminal record doesn't make a blind bit of difference to them. In fact sometimes it's entertainment for them.
However if you react to them and then end up in a fight - it has the potential to screw your career up!
The really worrying thing is these are the scum who are breeding! Most normal people who have worked hard and tried to get a house / car etc, know that financially it would be difficult to have more than two kids - so tend not to. No such worries for the Chavs - the more they pop out the more state income they're entitled to. Those kids tend to then not brought up correctly and up having a tonne more kids... Eventually the UK will be 50% chavs!!!