All this being said...
In my opinion, there is a strong possibility that Michele Bachmann and friends threw a lit match onto a pile of dry tinder in this case. It is by no means a certainty, but a strong possibility.
That being the case, it may be wise for authorities to watch for patterns of these types of crimes in the near future, to make sure that things don't go haywire.
It might also be wise for some people in the media to tone down their crazy-talk a bit.
If I was a media personality, or a politician with populist tendencies, and there was the strong possibility that what I say could lead to someone's murder, I think I would be a little more circumspect in what I said on the air in the future.