Find each and every person who was at any time responsible for those dogs and publicly mutilate them. That will solve the problem. You will only have to do this occasionally. This is the way it has always been done. We are in a rare moment of history where intent and results, rather than just results, are the basis for punishment. Oh, and don’t be a martyr — do it anonymously.
Thank you for a fascinating and thought-provoking solution to a wide-ranging problem. You must be a direct descendant of the man who cut the Gordian Knot.