Tucson

In another paranoid rant, the Tucson shooter wrote: "Reading the second United States Constitution, I can't trust the current government because of the ratifications; The government is implying mind control and brainwash on the people by controlling the grammar."

Read more: http://www.nypost.com/p/news/national/web_ravings_of_warped_killer_3W94yfVffll6l97bHeoHAO#ixzz1AaafGe8e

Actually, that mind control through grammar thing does ring some bells; and a quick google brings up this -

http://1phil4everyill.wordpress.com/2008/10/28/barack-obama-using-covert-hypnosis-in-his-speeches/

and

http://mindcontrol101.blogspot.com/2008/02/persuasive-analysis-of-barack-obama.html,

for example.

It was one of the wingnut extra fringe memes.

Ah: someone's traced it:
Jared Lee Loughner’s rants about grammar and mind control track closely to the writings of a conspiracy theorist who believes that is how the government controls the populace, one leading group says – and the man tells POLITICO he agrees with some of Loughner’s statements.

The far-right activist, David Wynn Miller, said in a telephone interview that he didn’t know Loughner, but agreed with his statement in a YouTube video that “the government is implying mind control and brainwash on the people by controlling grammar.”