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Associated Press
Tunisians demonstrate outside the home of Tunisian opposition leader Chokri Belaid after he was shot to death in Tunis, Wednesday, Feb. 6, 2013.  A critic of the Islamist-led government and violence by radical Muslims, Belaid was shot to death outside his home Wednesday, in the first political assassination in post-revolutionary Tunisia. The killing is likely to heighten tensions in the North African nation whose path from dictatorship to democracy so far has been seen as a model for the Arab world.  (AP Photo/Amine Landoulsi)

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