I think we should all remember that ANYONE at ANYTIME can become an unwitting party to violence forced upon people around us or ourselves pretty damned quickly in this country today.
Just watch the news, somewhere, someplace, at any given time, normal folks going about their business are trapped into any number of potentially violent or violent situations daily.
The world has been a dangerous place for a long time. It's not getting any better on a daily basis, and we are subjected to potentially anything from robbery/muggings to house invasions/breakins to quasi terr threats or worse.
Evil is all around us, it's that most of us do not or would not recognize it for what it is until it has reared it's ugly head and the fight is on. It's the nature of the beast. Knowing that the beast potentially lurks around every corner we turn, is not conducive to ging about our own intended business like we are living in la la land here.
Consequently, people are more vigilant of their surroundings if they are smart and paying attention to the way things are and not just sticking their heads in the sand trying to ignore it hoping it will not reach out and bite their own butts, and well they should be vigilant IMO.
People prepare for the worst and hope for the best if they are observant and have the means to keep the beast at bay. As much as you try, train etc, the beast can still just walk up to you and bite your head off at any time.
Err on the side of caution when something doesn't look right, when something brings more than the normal day to day activities. You just never know when it will come to you or close to you and you have to make decisions and take actions to avoid or stop that beast.
I'm not alive by accident, nor do I take the measures that put the odds more in the beast favor than my own.
I'm an equal opportunity profiler from way back. I find it works from years of working on the streets and listening to that little bird when it starts to sing.
Brownie