Some of your wittier wags here want to blame it on "gun free zone" signs.
You tell me which makes sense.
...
They stab each other to death in the gun-free societies.
As a mass stabbing as well. or find the other way to cause massive damage.
if the steam pressure is generated - the valve might have a different shape and construction, but it still would be found and yanked off one way or the other.
True. If we had a sword-fetish society, we'd have sword murders and occasional mass swordings.
The unfortunate difference is, you can't sit in a tower, or in an upper floor of a mall, or in the trunk of a car, and sword people.
For that matter, you couldn't mass-assault a roomful of Amish girls with the firearm technology of the 18th century either.