One factor to consider is how much more homogeneous the Swiss population is compared to that of the US.
I would bring to FR’s attention a NCPA report that shows, based on Texas data, that concealed carry permitees where the least likely of almost all population groups to commit a violent crime, let alone a crime with a firearm.
see:
Texas Concealed Handgun Carriers:Law-abiding Public Benefactors
salient excerpt:
In an unpublished report, engineering statistician William Sturdevant found that concealed carry licensees had arrest rates far lower than the general population for every category of crime. For instance:
Licensees were 5.7 times less likely to be arrested for violent offenses than the general public - 127 per 100,000 population versus 730 per 100,000.
Licensees were 14 times less likely to be arrested for nonviolent offenses than the general public - 386 per 100,000 population versus 5,212 per 100,000.
Further, the general public is 1.4 times more likely to be arrested for murder than licensees [ see Figure I ], and no licensee had been arrested for negligent manslaughter.
The Swiss have four official languages, so in some ways they are less Homogeneous. They are homogeneous in respect for the rule of law. In the United States, that respect has been under attack for a long time. You cannot expect respect for the rule of law when you preach that the supreme law of the land is flexible and malleable, subject to change at the whim of 5 judges.