Window smashing is wrong, though minor. If a student was intentionally run down, that's also wrong and someone should be punished. But I don't think any of that can be characterized as rioting.
BTW, even though these are examples are from Fox News (which I am absolutely certain that you will "poo poo" and say are all untrue because it is Fox), I actually do watch other outlets (CNN, ABC, MSNBC). These were just the easiest to grab. I have to get ready for a ladies' neighborhood breakfast that starts in a couple of hours so I did not have a lot of time to GOOGLE for sources that you would find acceptable....