Well, I don't think anyone is really suggesting that. I think the issue is more complicated than the set of binary possibilities that people often present it as. Again, I really don't understand why -- when countering the opposition viewpoint -- we create these overly hyperbolic possibilities where you have to pick between one of two possibilities:
A. Grab your arsenal of weapons and proceed to shoot at noise and shadows with reckless abandon so as to give yourself the best chance of murdering this person who must possess a deadly risk to you and your family for breaking into your house.
B. Cower in fear in a corner pissing your pants as you pray for the police to save you, for you are a hopeless bleeding heart who doesn't believe in standing up for yourself.
I love every time someone makes this point the next set of posts are immediately people going hyperbolic in one direction or the other. :/