Far as I can tell, the thing ended when we killed the last infiltrator. And every infiltrator was somebody who knew at least part of what was goin' on, was in on the little torture experiment gig. So I think what happened was, we had to kill 'em all in order to stop the little torture experiment gig.

[So in other words, it wasn't kill-all-your-friends for the sake of it, it was kill-all-your-friends to stop future killings.]