No cars were allowed in the streets, shops were completely shut down and there were electricity cuts on and off throughout the city during the afternoon.

NPR: Sudanese Riots Follow a Leader's Death

This weekend, I challenge you to completely shut down.

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On those days, IRS will shut down completely and taxpayers and practitioners will not have access to IRS resources.

FORBES: IRS To Mail Out Furlough Notices Next Week, Announcing Agency-Wide Shutdowns

On Friday, May 24, 2013, the IRS will shut down completely and taxpayers and practitioners will not have access to IRS resources.

FORBES: IRS Set To Close Next Week

During the 2008 bear market the IPO market shut down completely.

FORBES: The IPO Window is Wide Open

Between January 2001 and December 2002, the maquiladora, or manufacture-for-export sector in Mexico, lost 230, 000 jobs out of a total 1.3 million as hundreds of companies either shifted production out of Mexico or shut down completely.

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But it should be remembered that in 1933, President-elect Franklin Roosevelt refused to agree a bi-partisan deal with President Hoover to stave off the collapse of the entire US banking system, which shut down completely on the eve of his inauguration.

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It can make the Web site slow to load up or shut it down completely.

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It caused Miami-Dade officials to shut down their recount completely.

CNN: Our Imperial Judiciary