Blaming Rush is just the first thing.
Tea Party next.
I have noticed this tendency—I don’t know if it’s recent or has happened from time immemorial—for people to attempt to pin any horrific or violent act on their political enemies.
Or they want to use it to make a political point. “It proves we need gun control!” for example.
Sometimes people have to realize that unfortunately there is just plain evil in the world, and it doesn’t always relate to an ideology or a race or a religion, etc.
It may end up that indeed some of that may be in play here; we just don’t know yet.