The protests usually are very well attended organised and peaceful. The organisers of the protests want people to go home afterwards and most do. But some peop

The protests usually are very well attended organised and peaceful. The organisers of the protests want people to go home afterwards and most do. But some people hang around after it's ended and then the sun goes down and the protest is actually over and the police try to get people to leave. Then it's a people Vs police confrontation that may escalate. Then it's a riot. Usually these deescalate and the police have training in how to do that. It's not the protests that is violent it's what happens after the protest finishes. Riots by definition are out of control! Some protestors would claim that the violence is orchestrated by the police. There has been some evidence of that in some places of the world. Mostly it's a riot of violent people, criminals, kids usually, who are thrilled by the violence and chaos and hatred. Mob mentality creates a mob.