There are an unusual number of comments from new accounts making disingenuous arguments on this post. I wonder who is behind the astroturfing.<p>The answer to "what else should we do about bad people doing bad things?" is, of course how we usually catch people doing bad things: old-fashioned detective work. It involves taking reports of suspicious or illegal acts, interviewing witnesses and associates, requesting court orders to search or surveil specific people and places when there's evidence to do so, etc.... It doesn't scale. It's not supposed to.