I think it's a fair argument to say that this is a founding principle of America. Of course, life expectancy back then wasn't so great. I think we as society need to affirmatively decide we've moved past that idea. It certainly seems impractical to imagine such civilian action happening today.
I have a real conflict regarding the 2nd amendment. The right to self protection seems fundamental to me. The question is, what is the nature of real self protection. In a sane world, what does it matter who owns guns. Nobody would use them to kill as there would be no desire to murder and no need for self defense.
At the time white settlers were in the process of putting flags in aboriginal land, guns were vital for such theft or to prevent usurpation of ones theft by one's compatriots. Today we live is a civil society governed by law except in rural areas where legal protection is miles and hours away and most of us rely on law enforcement for our protection. I realize now my rambling could go for pages.
So it's a complex issue and I face it as somebody who loves guns and is also as sure as I can be that I'm never going to shoot anybody.
For these reasons I am very sympathetic to the notion that it is ignorance of the problem of self hate that leads to gun violence, the fact we would rather live in a violent competitive hate filled world than know ourselves and what we feel.
And the issue is really just beginning. The time may soon arrive when a deranged genius teenager may be able to builf his own home made nanobot self replicating molecular disassembler that can turn the surface of the whole planet to dust, or a virus that can kill billions, or an AI taught to hate people. Humanity is asleep and will only awaken with need. The question is will their be time between the need and the awakening to save ourselves. I have hopes we will see some measure of awakening in 2018. I won't hold my breath.