its just an excuse for anyone and everyone to (if they want) be anti social, throw stuff, burn stuff and steal stuff because they have a big chance of getting away with it. If they did it on a normal day they would be arrested instantly, but as theres a mob of them its relatively safe. So they see others doing it and getting away with it, so they want in, its also a massive adrenaline rush and a completely different day to their normal lives. Unfortunately it seems to be the more hard off people doing it as in general they have less fear of police and dont fear consequences. I wouldn't do it, maybe because i think its wrong, maybe because im scared of being caught, maybe its because i have respect for other people. I dont quite know, but i wouldnt do anything like that. But there is a minority that will and have....they need no motivation, just an excuse to start, however unrelated.