Did anyone actually read that Report that the Right is pissy over?
There is no real evidence, but more a glorified official "speculation," which is quite possible I suppose but those motivations are nothing remarkably new within American history, save for the first black President bit.
Hell, HS released a report about extremist Left Wing activity in Janurary, revolving around Environmentalist/Animal Rights groups and so forth.
But again, what else is new?