Pakistani NGO workers protest at a rally on World AIDS Day in Peshawar in 2006. Tariq Mahmood/AFP/Getty Images hide caption

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A demonstrator throws a rock towards police during demonstrations in Tunis. Fred Dufour /AFP/Getty Images hide caption

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Britain's Queen Elizabeth and Pope Benedict XVI in Edinburgh, Scotland, today. Dan Kitwood/Getty hide caption

itoggle caption Dan Kitwood/Getty