Perhaps they're violent only because they can't get access.  Or maybe they would be violent in any event.  We won't know until we give it a go.  I say we roll the dice and let the people have their say for once.

As an aside, you probably shouldn't dehumanize the protesters.  Most of them are a lot smarter and more decent than you, notwithstanding the altercations with the police and acts of minor vandalism.