Now this may turn into a bit of a rant, so firstly, for that I apologise.
Why is it, even in reasonably nice areas (as I would class the section of Norwich I live in during Uni term time) that you get loadsa bored kids with nothing to do? Now fair enough, riding bikes round, playing football I don't care. But when did kicking wheelie bins over become an accepted part of civil society? That, and when I was younger I daren't run across other peoples front gardens - if I needed to get my football back I knocked and asked, yet this lot seem to see it as a perfectly viable footpath.
The second issue is, how do you respond to it? Last time we had a group of kids round here (that obviously didn't belong) they tried to gain access to my garage, containing motorbike and a £400 pushbike. Why? Those lot I challenged and they scarpered, but the lot this evening I'm sure if they wanted could return and do considerable damage to property (i.e. my car parked outside on the drive).
Now I'm not afraid of challenging them, but 10-15 kids significantly outnumbers the entire one of me, even if they were only 12-15 years old at a guess.
Ah well, another side of workshy Britain...