Shamu got it right!
What's really at work here is a liberal, entitlement society that destroys respect not only for others' rights and property, but for one's self. These ignorant punks really believe the world owes them something. And why do they think that way? Well, we get a bit of a hint from previous comments here reflecting the socialist European mentality, including:
"Stupid capitalism is destroying the whole world. I bet this isn't the last riot based on a government's austerity."
Perhaps the writer doesn't understand "capitalism." It is an economic system where the means of production is privately owned and operated competitively for profit. What that does is drive up quality, while driviving down price for goods and services. Contrast that with socialism where the means of production is government owned, which system drives down quality and destroys incentive. Why work hard to get ahead in such a system?
And this comment:
"The youths of today are ignored by all politicians, they get less and less rights, less access to everything, education, in other words, they got no hope."
Give me a fucking break. Less rights? Less access? Less hope? Bullshit!!! The "youths of today" need their asses kicked until they got off them and earn their own way in life. Respect is earned, not granted.
If you wish to prevent a thing, you need to make the consequences for doing it sufficiently severe. Rioters, no matter who they are, not matter their age, should be shot on sight.