A woman walks under flags flying at half staff at the Washington Monument on the National Mall in Washington November 17, 2015. U.S. President Barack Obama issued a proclamation ordering flags to fly at half staff as a mark of respect for victims of the Paris attacks. REUTERS/Kevin Lamarque
PIX OF DAY: Flags fly at half staff in Washington for Paris attacks
A woman walks under flags flying at half staff at the Washington Monument on the National Mall in Washington November 17, 2015. U.S. President Barack Obama issued a proclamation ordering flags to fly at half staff as a mark of respect for victims...

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