Terrorists and school shooters. Frankly, if cops were as gun happy towards Nazis as they are everyone else, we wouldn't have quite the fascist problem.
Now, I'm not saying an idiot with a gun is the best solution to those issues, but it would be a solution.
But the og reply I'm replying to said "correct" (not best, or appropriate, or practical), that's why I don't want a raging natural murderer doing any murdering (not even as executioner).
That's why you don't usually have hero movies where heroes heroically kill people & enjoy it - but rather heroes that oppose killing (but still kill a buch of evil™ people).
Well, since it's not exact science we are talking about the "correct" can only mean something totally subjective.
So I might not think ever the correct solution to use a murdering idiot with a gun.
Not least because that implies having (and keeping) murdering idiots.
That's one example why I would label that as an incorrect solution.