A lot of these people are no different than your average American, British, Canadian, etc., protestors. It's a lot less to do with beliefs and more to do with "I can throw fire and break windows and get away with it? Cool!" Seeing them do all this while wearing Calvin Klein and Adidas tells me this. Probably about ten percent of the people you see rioting are doing it out of a belief in a cause. Kind of like how that occupy shit quickly went from "stop corporate greed and give the little guy a chance" to "Whoa, it's Steve! Thought you'd be down here dude! Let's smoke some hash and fuck with the cops!!"