Wow, I thought the worry that the LHC might destroy the world was amusing, like most predictions of the end of the world. It turns out people have been sending actual death threats to LHC researchers.
The annoying part of this is that just a couple people (who Mark correctly identifies as crackpots) have managed to generate a storm of publicity. There are pieces in the Times, the other Times, and the Guardian to pick the first three I could find. The WorldNut Daily even ran a poll with… well… “interesting” responses.