Lighten up, Kevin. We're talking self-defense here, not vigilantism. I am aware that there are places in this world where people are not allowed to possess the means of protecting themselves and their families but that doesn't apply here; not yet at any rate.
Britains much vaunted gun control hasn't managed to keep arms out of Northern Ireland or in England itself for that matter.
There seems to be no lack of high explosives for bombs in London markets.
So, as I said, lighten up.

troll