I'm by no means a free speech absolutist, but I have to side with them on this one.
I will show a modicum of respect the day they show they're taking ANY measure to actually try and stop violence, and stop sending and carrying out threats. And I believe it's of utmost importance that we don't change our laws BECAUSE of those THREATS.
Don't be absurd. In what way are you impairing anyone else's rights by destroying your own property?