Violence, for most people, it is a vague possibility. Easy to fantasize about, hard to imagine in any realistic detail. For a few it is a professional consideration. For some, it is an element of life, constantly possible.
Those types of responses may be universal. Maybe. Name a problem... say... a Russian invasion (since I seem to be in a 70's/80's mood). Especially after Red Dawn came out, there were a lot of people fantasizing about it. Mostly about glorious battle and grateful rescued maidens, probably. A few practiced a little marksmanship and went back to their routines. Not many made any real changes in their lives and possibly even fewer did a realistic assessment, say by reading intelligence on the threat or even studying Russian language or culture. (Da, ya govoryu nemnogo porooski).
For a few, it was a professional consideration and the military had some training and concrete plans. It wasn't the most likely thing and so didn't get obsessive training... but my National Guard unit had firing positions selected in the Coast Range.
And for some, they actually lived in the old Soviet environment. It wasn't pretty, especially if you had trouble keeping your ideas to yourself or, say, happened to be born Jewish.
The problem wasn't the same for all people.
With violence, I've been working with a lot of that first group recently. Too many martial artists (IMO, of course) are fascinated by the idea of violence and repulsed by the reality. Or would be repulsed, if they ever got close enough to see it.
So another window, maybe.
Violence is a vague thing that might happen. How would your training change if it was a concrete, inevitable thing? If you believed that sometime in the next year, you would be targeted at your weakest to be beaten, or killed? No one can help you.
Would that change the way that you think? The way that you train? Would you still trust sources blindly? When experts contradicted, would you go with the one you liked? Or would the stakes influence you to dig deeper?
This seems like it would work, but I know better. My preparation for Iraq was to read the Quran and a version of the Hadith and a number of books written by Iraqi natives or people in country as anthropologists. Plus the usual military sources. I had my own water filtering system, maps to get to a friendly border on foot, a collection of essential survival and evasion equipment that never left my side and had picked up some basic (unfortunately not local dialect) Arabic.
One of my compatriots preparation was to lay in a stock of jerky and figure out if he could get satellite TV.
When my mom was first diagnosed with cancer, she researched the subject obsessively. She could ask her doctors questions, get clarification when experts disagreed. She made informed decisions and she is still kicking along thirty years later. The old friend who said "God will provide" and passively did whatever her doctors told her is dead. So is the tough old man who relied on his own strength.
With violence, you learn. You might still die, but if you expect magic to save you or that you already happen to be the perfect combination to survive, just by luck... it might work for you. Roll your dice.
If it was going to happen, or if you chose to pretend it was going to happen and maybe change your training, would you? Or would you be one of the ones who trusted in forces outside yourself to make things work?