This maneuvering will inevitably cause the choppy, violent movement that is typical of bear raids on the stock market.

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American policymakers need to be aware of this fact, because a government run by Bhutto or Sharif simply may not be up to the challenge of confronting this violent movement.

CENTERFORSECURITYPOLICY: Dictatorships and Double Standards

We've just marked the 50th anniversary of the Montgomery bus boycott, the beginning of the non-violent protest movement in the civil rights struggle.

NPR: History of Boycotts

"I assumed a correction was coming, but the movement was extremely violent, " said Ryo Takebe, a 28-year-old retail investor who works at a chip-related manufacturing firm.

WSJ: U.S. Stocks Temper Global Market Rout

Last year, a Peruvian truth commission officially blamed the Shining Path for 54% of the deaths and disappearances that ensued during the movement's years of violent insurgency.

BBC: NEWS | Americas | Shining Path retrial halted again

Further north, in Jenin, the Palestinian movement is rent by the same violent factionalism.

ECONOMIST: Palestine

Mahatma Gandhi (1869-1948) was a saint-genius who turned opposition to British rule into a mass movement and demonstrated, through non-violent protest, that virtue has its own inescapable power.

ECONOMIST: Indian biography: Skin deep | The

Guerrero has seen a growing movement of self-defence groups in response to violent criminal gangs and the failure of police to guarantee security.

BBC: Mexico vigilantes detain police in Guerrero

Damage or abnormalities in the frontal lobe -- a brain area that regulates movement, inhibition, emotions and general behaviors -- has been linked to violent behavior.

CNN: Insights on why people 'snap' and kill