Turns out that gun nuts are everywhere.
Watched a pretty good movie, a UK-New Zealand co-production, made for British TV movie called Bad Blood, the true story of a mass murderer set off in part by the New Zealand government taking all the .303 caliber rifles. This was at the beginning of World War Two. New Zealand was short of weapons and seized all privately owned rifles in that caliber for military use.
Stan Graham owned a dairy farm in New Zealand. He didn't keep the place very clean and his co-op began refusing to buy his contaminated milk. It was also making his cows sick, so he and his nutjob wife accused the the neighbors of poisoning them. He and his wife would go in the back yard in the middle of the night to practice their shooting.
A neighbor called the police when Stan threatened him with a gun. Stan threatened the constable with a gun when he came to his house. The constable fled, came back with some other men and that's when Stan started murdering people.
If you're in the dark waiting for a murderer to return and someone shows up and you can't see him and he refuses to give you the password, it might be a good idea to shoot him, although any normal person would be hesitant.