You know, the sad thing about all this is that there really are legitimate reasons to criticize the Obama administration. Unfortunately, shit like this drowns out intelligent, fact-based criticism just as a leaking power line interferes with a radio signal.
Which means that the legitimate grievances of liberals, conservatives, and moderates alike go largely unheard, because the sensationalist corporate media, and much of the so-called "alternative" media, focuses on the crazies.
We need to remember that this sort of rhetoric and behavior hurts EVERYONE, by debasing political discourse as a whole. Which is exactly why I think this sort of threat deserves to be prosecuted. Discouraging and removing crap like this from the public discourse would actually be a net benefit for free speech.
Go ahead, tell me how wrong I am.