Chaotic
Since you labeled the people as "rioters", I think it's relevant to note that once the rioters have changed from white to black and vice versa, they still continued to riot. So here is my take on the theme:
Taking into account the general laws of physics that are cause and effect... chaos is an unavoidable effect that is the result of an infinite number of causes. You may be able to CHANGE the dominant cause of chaos in the world, but you will never be able to STOP chaos all together.
Another philosphy that applies here can be seen by the way your character had a difficult time moving when the majority of the crowd was moving in the opposite direction, but an easier time when you've converted more than half of the crowd to move in your direction:
What appears to be "order" is merely a moment of coincidental sameness amongst an eternity of chaos. Eventually, the feeling of order is lost.