Football hooliganism is certainly to an extent a case of 'if you treat them like animals ...'
In England, things started to improve once they removed all the fences around the pitch. In Belgium, the teams with the least hooligans are those without the fences. Also, more and more politicians and chiefs of police are calling into question the so called 'buscombi'
. Buscombis tend to raise agression levels among both those being driven like cattle and the home fans. 'high risk' games where the combi was canceled at the last minute tend to go ahead without much ado.
Of course this isn't all there is to it. People stuck at the bottom rung of the social ladder often use football as their way of lashing out. Many haven't got a clue about their team or the game they're watching. Ban football and the violence moves to a different sport. The Dutch band Heideroosjes once made a song about a checkers club hooligan
Remeber those riots in England last year? If you ban sports all together, you'll see a rise in these kinds of orchestrated riots. Paris and Brussels have suffered these kinds of 'any excuse will do' riots too, recently.
Why does this violence seem linked to football? Hell, it's the number one sport worldwide. In India, fe, where pro football will only start next season, they have cricket riots.