This isn't a popular sentiment here on FR, but I've never hated liberals, nor have I understood the depths of emotion towards those who do. Politcal stances have rarely bothered me.
Whether this girl supports this administration, or this war is irrelevant to me. I would have found it disturbing had she defiantly stood her ground regarding her myspace, but instead she removed it of her own accord. This girl is no threat or danger to anyone. She just holds juvenile opinions that make some people angry. I don't have a problem with that.
And where to ideas come from that lead to attempts on other people's lives? They don't arise all on their own. Whether this particular child is a danger to the POTUS or not, someone saw what she posted, and could act upon it. No liking the administration or being against some policy does not provide a defense against stupidity.