In this photo taken Tuesday, Feb. 26, 2013, children play street games in an alley of the Mathare slum of Nairobi, Kenya. Kenya on Monday holds its first presidential election since its 2007 vote devolved into months of tribal violence, and in recent weeks in Nairobi's most dangerous slum Mathare dozens of tin shack homes have been burned to the ground and some families are moving into zones controlled by their own clans. (AP Photo/Ben Curtis)
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