Regardless of the legitimacy of firearm laws (or another one of JB's insane rants), I have yet to hear a convincing argument on the issue of the bystander. Are a few plants and a strong message to other thieves really worth the death of an innocent civilian? She did say, after all, that she could "smell" the gunpowder. Also, show me the statistical proof that protecting one's property by lethal means lowers theft or crime in general.
Other than that, you guys can sit on your computers and pretend you would shoot a trespasser all you like, but until that moment arises, you're just making a moot point.