It had to happen of course. To admit that this was a terrorist attack does not fit the Obama narrative that he and he alone has defeated Al Qaeda and Middle Eastern Terrorism and that they are weakened and on the run. He is taking a beating on unemployment, the economy, gun control and immigration. So to bolster support the leftist media Obama propaganda machine blames some mythical right wing group so that people will feel more accepting of Obama's statist dictatorship and side with the nice man in the oval office.
Sorry it just won't wash.