The problem with 'peaceful' protest is that those being protested against get to define 'peaceful'. To the point where 'peaceful' is a synonym for utterly inneffectual and completely ignorable.
I love the smell of rotaries in the morning. You know one time, I got to work early, before the rush hour. I walked through the empty carpark, I didn't see one bloody Prius or Golf. And that smell, you know that gasoline smell, the whole carpark, smelled like.... ....speed.
One day they're going to ban them.