Charming, wishing the death penalty on people.
Fortunately we live in a civilised country, even if some of its inhabitants are not.
Somebody deliberately crossing a live railway line, for no reason other than to be an a**ehole, is rather wishing the death penalty on themselves, don't you think?
I'm reminded of an incident a few years ago, just up the road at Hilsea, where a trespassing local scroat was wiped out by a train. His scumbag mates then took it upon themselves to attack the crew. Just what you need in the immediate aftermath of a fatality. It's a damn shame the lot of them weren't lined up like skittles in the fourfoot. The casualty was 21, a grown up but not far from being firmly in the 'youth' category being discussed here. That's what happens, they become grown up a**eholes instead.
I'm afraid my sympathy for individuals of that ilk is somewhere below zero. We live in a harsh world, and there are far more worthy places to extend one's concern. As for 'children', it's rather subjective, isn't it. 'Children' is a very different description to 'youths'. Gangs of yobs, riding around causing as much grief as possible, are not little toddlers. They've chosen to behave in a certain manner, and as such they'll be beset by the consequences. I would confidently bet that a school/college visit by the BTP and the usual videos would do little good here. Seeing the consequences for real is likely to be rather more effective.
Alas, perhaps I shall be destined to be plugged into 750v dc in hell for all eternity for my appalling views...