Why not declare open season, issue licenses, and simply kill them all where they stand?
(Come to think of it, Babylon 5 did an episode with a theme similar to this. Ended rather badly, though. As no one is truly "pure," the result was the eradication of a planet's entire populace. Oh well; I'm sure the Shining Lights of our elite will handle it much better. Right?)
Dan
My eyesight is bad....I guess I'm a goner!
P.S. Loved the "teeth" comment in #26.