A good friend of mine has a theory of how we use "negative entropy" sources to help us more easily get things done.  An example of a "negative entropy" source are words that create a strong emotional response, like "terrorism." 

His theory is that we will use these words (negentropy) to dump entropy into until we've extracted all of the useful work from that source.  At this point, these words actually begin to have the opposite effect on the public as they once did. 

I think we are nearing that point already.  Whenever I hear "terrorist," "drugs," "money laundering," or "child porn" my instant emotional response is against the person who is trying to use these words to advance their agenda.