Earlier quoted context omitted.
I remember the 70s and my experience was nothing like your mom's. Population centers have always been full of petty crime; rural places are still pretty free from crime. You can still move to plenty of towns with population The one big difference though is today we have school shootings, so folks are pretty humorless about guns near schools. I'd love to hear your ideas for how to solve that, because they keep happeni…
Your theory of urban/rural bifurcation is overly reductive. My city had a population of about 40,000 in the 70s (when guns were left in racks in the backs of trucks in the high school parking lot)—it's about twice that today. (I did however just return from visiting my wife's hometown in northern Idaho, which has a population of about 500, and indeed I did not feel the need to lock my car, despite keeping a firearm i…
Also the leaving guns in vehicles thing could also be affected by another number here. And that is miles driven per capita and vehicles owned per household averages. That is you could have the same total number of thieves that steal guns, especially among those with more poverty, but as you increase the number of cars groups that could no longer afford them have them. Also the number of miles driven means the potential thieves are covering way more territory.
Anecdotally I heard about things like this in the late 80s and early 90s. Farmers were complaining that groups out of Chicago were running off with all the stuff they'd leave around all over the farm.
In addition starting in the mid 70s was a long recessionary period (stagflation) after decades of a good economy in the 60s that shook the US to the core.