Then take them out somewhere and dump them in shark infested waters and let nature take it's course.
Or we could cut their plucking heads off...
I agree : take them out in the Caribbean chums the waters with pig offal , put them all in flotation vests so they can remain on the surface and see what is happening , tether them with fine steel cable and and throw them in . Commence a slow troll at about 1 knot . Continue to chum the offal ...