This is the working class revolting against the police, who are the immediate strong arm of the State that recently and increasingly wishes to contain youth and the poor with prisons and austerity. Looting is an act of breaking the windows that hold people from the commodities they desire. This isn't to say that looting is a positive act of transcendence of the present order, because it conforms to dangerous consumerism. But the looter deserves a luxury good just as much as the buyer.
The working class is nasty. What do you expect after decades of neoliberalism?
I can't help but comment on the sheer joy the rioters express. How good must it feel to fight back against the police who bother you daily and terrorize your community regularly? They laugh, swigging liquor with their friends as they take the **** they've always wanted but could never afford.