Sometime back in February, about three weeks into Barack Obama's administration, everybody on the left suddenly noticed that there was something different going on with the conservatives.

The outrageous screeds and paranoid delusions sounded pretty much as they always had -- but there was a new fury behind them, a strident urgency that hadn't been there before, and a very audible shift of the gears in right-wing behavior and rhetoric.

None of this came as a surprise to veteran right-wing watchers -- we'd been predicting a bad backlash since the 2006 election -- but more than three months into the new administration, it's increasingly hard to ignore the fact that this ominous new trend is taking on a momentum of its own.

On April 7, the Department of Homeland Security ratified some of those observations. Fueled by bone-deep racism, an unnatural terror of liberal government, frustration over the economic downturn, and fears about America's loss of world standing, they said, the militant right wing is indeed rising again.

Its numbers are up, its talk is turning ugly, and it's not unthinkable that we could be in for a wave of domestic terrorism unseen since the mid-1990s.