It's an effective tactic indeed. For example, one well-equipped, adequately-executed armed assault on a Therapeutic Boarding School with accompanying arson and Al-Qaeda-like execution of any adults who weren't annihilated in the initial attack, will effectively scare potential programmies out of the business, possibly scare some others into shutdown, wise up a great many parents to a danger they weren't considering (thereby reducing demand as well as supply), and terrify other programmies into possibly self-destructive actions.
The process should be repeated for maximum effectiveness.
And it will not initiate the usual counter-response (as in patriotic, familial, or other situations where lives are threatened), as these people have nothing to fall back on but their own sadism. They'll fall like a house of cards.
So, yes, TheWho, Zero Tolerance is an extremely effective technique and I'm glad you've suggested it.