March Against Arpaio Police provoke violence

My opinion of this video is the police provoked this violence in an otherwise peaceful march. Notice how they are bunching up in this last stretch of the march. The police officer in the little green cart was trying to run people over the crowd yelling at him to watch where he was going so as not to hurt anyone. He started to drive up on to the side walk and then down again. As the crowd was yelling the horses came and started to try and trample people. The second horseman (police) was spraying the crowd with mace, not caring if they were children or family members. You can see him with the can in his hand. In the other portion when the man in the green shirt tackles a protester (I do not know if he was there to agitate) but he tackles him and then immediately runs away to let the police take care of the rest.