100 Years of 100 Things: The Use of Terrorism; Reporters Ask the Mayor; What Happened at Last Night's Presidential Debate

A light display shines from where the World Trade Center used to be, New York, Sept. 11. The two beams of light are illuminated each year on the anniversary of the 9/11 attacks.
( Official Marine Corps photo by Sgt. Randall A. Clinton / Wikimedia Commons )

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