The Los Angeles Times:

Most wind up concluding that Loughner suffered from mental problems. But experts said that several oft-repeated phrases and concepts — his fixation on grammar conspiracies, currency and the “second United States Constitution” — seem derived from concepts explored with regularity among elements of the far right.

“What you can see across the board in his writings is the idea that you can’t trust the government — that the government engages in mind control against its citizens,” said Mark Potok of the Southern Poverty Law Center, which has long monitored the radical right.

Loughner’s assertion that he would not “pay debt with a currency that’s not backed by gold and silver” is a running theme among right-wing opponents of the Federal Reserve system.