A channel 4 reality TV documentary? That's as sound proof as a banana with a hat! I may not do social work, but I do quite a bit of video work. A lot of happy families doesn't sell. They edit it down to get greatest effect. It's done every single day, and it's effective. If they terrorise their neigbors, kick them out. If it's because of something their kids did, then don't. It's that simple.
These 18 year old kids didn't think about concequences. It's just a consignment of geriatric shoe makers to think that being tougher will have any impact. Tougher sentences has never been seen to work, even if you bulldoze someone's home (like the Israelis used to do), it doesn't work. Someone needs to start thinking about how to stop these things from happening. Chest beating just isn't helpful. It's never been, and it never will. But it's popular, it sounds nice in the Mail. It might even lure over some of those middle class people who still vote Labour. But in terms of helping the situation, it is just not useful.
In the same way that being exclusively strict doesn't work, neither does Labour's plan to just throw money at problems and see if it sticks. We need a society where if you break the law it will always be met with strict punishment, while giving people opportunities to draw them away from crime altogether. Something which would be incredibly difficult to accomplish in current economic circumstances because it would be incredibly expensive.