Tunisian riot police officers face demonstrators (unseen) during clashes in Siliana, Tunisia, Friday, Nov. 30, 2012. Tunisia's Prime Minister accused opposition parties and unions Thursday of provoking three days of violent clashes in Siliana and pleaded for patience while the government tackles the nation's economic problems. (AP Photo)

Associated Press
Tunisian riot police officers face demonstrators (unseen) during clashes in Siliana, Tunisia, Friday, Nov. 30, 2012. Tunisia's Prime Minister accused opposition parties and unions Thursday of provoking three days of violent clashes in Siliana and pleaded for patience while the government tackles the nation's economic problems.  (AP Photo)
Tunisian riot police officers face demonstrators (unseen) during clashes in Siliana, Tunisia, Friday, Nov. 30, 2012. Tunisia's Prime Minister accused opposition parties and unions Thursday of provoking three days of violent clashes in Siliana and pleaded for patience while the government tackles the nation's economic problems. (AP Photo)
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