"... sent to local police forces which warns of growing 'right-wing extremist activity.'"
Glenn Greenwald makes light of what really is a very strange government report. (Read the report. It's all about how criticizing the government creates a very dangerous climate.)
GG's point — and he does have a point in his too-verbose-to-quote text — is that the Bush administration started the spying on domestic political groups so it's too late for righties to convincingly bitch about it.