Student Anne-Marie Beitler affixes a red ribbon to a wall as part of activities to mark World AIDS Day at the University of Pennsylvania in Philadelphia, Friday, Dec. 1, 2006. World Aids Day was marked around the globe by somber religious services, boisterous demonstrations and warnings that far more needs to be done to treat and prevent the disease in order to avert millions of additional deaths.
(Photo: AP Photo/Matt Rourke)
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