Don't know anyone who uses the word peacenik, I was teasing you about it and calling you old in what was intended to be a joking way.
You're most free to be armed, as I'm free to be disgusted at the dehumanization of people, yes even criminals. The whole idea that someone is defenseless on a college campus is kind of silly, IMO and I'd rather leave it in the hands of campus cops, than in the hands of drunk college students. When they can stop falling off balconies and vandalizing statues when drunk, they can work on owning a gun. Too hard for campus life and too dangerous for campus security (and for domestic abuse victims).
As for escalation, if the crime isn't going to go away, which I'm confortable assuming it won't because we'll have all the causes still around, then escalation is the necessary consequence.
Individually, you might not wave it about, but what exactly are the odds of you solving anything with it? Seems like a security blanket to me. Which is fine, but someone armed at Virginia tech during thata tragedy, without police training, would have been at least as likely to shoot a bystander, make themselves a target and get shot, or make the police (or anther bystander with a gun, right?) Think you're one of the baddies. There just isn't that save the day moment I see glory hounds claim they'd manage. You are not likely one of them, but they are the loudest ones claiming how guns would have changed things.
I try to be realistic. Guns are tools. They are tools to kill people, but they aren't magic crime stoppers.
(And you still need data to support that it works as a deterrent). Criminals have guns too. And in any given situation, what the hostage specialists will tell you, is that deescalating is far preferrable to escalating. Ending it would be best, but good luck. And hope no one else gets hurt for your attempt.