People need to learn how to protest

We have seen it numerous times, people upset with their government so they take to the streets to voice their opinions. Now this is a good thing, showing your government that you are not happy with they way things are being run, but when i becomes a problem is when things begin to get violent. We have seen it more and more, "protesters" going to events or out on the street and destroying everyone's property. Most recently these types of protests have been happening at Donald Trump rallies and after police involved shootings. What people need to learn is that by destroying cop cars and shutting down entire events like, Trumps speech in Chicago, or destroying your city, like Ferguson Missouri, does not help you get your point across.  There is a difference between protesting and rioting and people need to learn that difference.