Trolling through a handy new feature on the Citizen Media Law Project (it allows you to search for legal threats across the nation on issues involving the media and free speech), I found this case:
The U.S. Attorney General filed a lawsuit against John Dunkle for threats he made on his website against an abortion provider. According to the synopsis on the website, Dunkle posted the name, home address, and a CSI proof way to kill the abortion provider.
Salon.com wrote a blog post about it aptly titled: Don’t like abortion? Shoot a provider in the head.