Shooting the taggers

Tim May wrote:

And yet can J. Random Businessman defend his property against this defacing? Nope. The cops say "Let us handle crimes." But they don't.

There's a solution for taggers: snipers.

There appears to be a wonderful market for long-range nonlethal stun weapons. I wonder, if a tagger is marking your building, would it be legal to stun him from a distance and then call the cops? Rape can be argued to be deserving of serious punishment of some kind, but would tagging deserve death when a nonlethal option exist? Could not the woman stun the rapist and then call the cops? -THE LIE