Unfortunately our leaders have successfully convinced the masses that it's only acceptable to protest as long as they do it at a scheduled time and place, without disrupting or offending anyone, and without any implicit threats of escalation and violence if the protestors' grievances aren't heard and rectified. That way people can vent to temporarily release frustration but we're powerless to effect any meaningful change, by design.
Yep and our country doesn't have a history of beheading or tossing leaders out of windows like Europe does which gives us a faux sense of being more civilized, or above it. Violence isn't always the answer, but sometimes it's the only answer.