I'm fine with protesting and even whining. Looting and burning, not so much. Those types of activities harm the ostensible cause more than advance it.
Why is it whenever I see rioting and looting on TV, which initially started as a protest, that those doing the looting generally look very happy with themselves with a huge grin on their face as they walk out of someone's business they have just destroyed. And it's usually a small business owned and run by a local person who may be similar to the looter, other than the fact that the business owner works hard for their money while the looters sprout off about being owed something.