I’ve been saying that economic forces will precipitate a Brief Period of Violent Upheaval. Commenter “Knarf” at Vox Popoli reminds me that socio-political frustrations are another source of ignition:
If Obama has his reelection stolen from him by The Man, the oppressed underclass of color will erupt in a convulsion of righteous anger and there will "Rodney King"-grade riots, looting, and burning in every major city in the country.
However, if Obama wins reelection, the people will erupt in a spontaneous joyous celebration, and there will be "Detroit Pistons win the NBA Championship"-grade riots, looting, and burning in every major city in the country.
In meatspace I’ve been seeing an unusual amount of anger lately. From all factions. Two months of Presidential campaigning is unlikely to soothe anyone.