I know there was violence in Oakland (subsequent to earlier police violence). My instinct is that the troublemakers are government or rightwing plants. We've seen as much before, going back to the 1960's in the U.S. and the 1930's in Germany.
In any case, it doesn't discredit the entire movement, it's goals or general innovations in democracy. And with guys like this one inventing their winter power source, I feel a glimmer of hope for this country politically down the line.
Most of all, I'm excited to see where this particular protest goes.