Earlier quoted context omitted.
Guns are legal in almost every country - I think your problem is with countries that have almost no restriction on gun ownership. e.g. Here in the UK you can legally own a properly licensed rifle or shotgun and even a handgun in some places outside of Great Britain (e.g. Northern Ireland).
Just because something is technically legal, doesn't mean it's in any way common or part of UK culture to own a gun. There hasn't been a school shooting in the UK for nearly 30 years. Handguns were banned after the last school shooting and there hasn't been one since. https://en.wikipedia.org/wiki/Category:School_shootings_in_t... Although that fact is sometimes forgotten by schools who copy the US in having "active…
It seems to me like victim blaming for U.S. schools to have active shooter drills - it makes more sense to have much better training and screening of gun owners than trying to train the victims. However, given that the NRA is excessively powerful in U.S. politics, I can see why they are necessary, but it just seems easier to me to stop kids from being able to get hold of guns (e.g. have some rudimentary screening for gun purchases and require owners to keep them in locked cabinets when they are not in use).