I don't need to understand the perspective of the protester. I have protested in the past and may do it again in the future if something really bothers me. And,

I don't need to understand the perspective of the protester. I have protested in the past and may do it again in the future if something really bothers me. And, well… I have been part of the violent crowd in a number of occasions, actually, so I happen to know the physical cost of it all. Protesters may feel that their concerns and actions are justified but that doesn't mean that everyone else must agree with them. That doesn't mean that the targets of their uncontrolled anger must stay passive either. Alice may justifiably be angry about something, but Bob is equally justified in his desire to not have his store's window smashed… and she _must_ acknowledge that symmetry if she doesn't want to be bitten too hard by Bob's reaction to her action. Protesters are definitely justified in using their right to protest (or fighting for it), but those who don't share their concerns are equally justified in making contingency plans.