FILE - This Tuesday, Dec. 4, 2012 file photo shows a member of the leftist UGTT union raising his arms next to riot police officers during a rally to commemorate the 1955 assassination of a historic member, before being were attacked by the League for Protection of the Revolution in Tunis, Tunisia. Two years after the revolution that overthrew a dictator and started the Arab Spring, Tunisia is struggling with high unemployment and rising violence in its politics. After sounding the alarm for months over the rise of religious extremists, the opposition now warns that the new threat to this North African country's democratic transition are vigilante bands allied to the elected government.(AP Photo/Amine Landoulsi, File)

Associated Press
FILE - This Tuesday, Dec. 4, 2012 file photo shows a member of the leftist UGTT union raising his arms next to riot police officers during a rally to commemorate the 1955 assassination of a historic member, before being were attacked by the League for Protection of the Revolution in Tunis, Tunisia. Two years after the revolution that overthrew a dictator and started the Arab Spring, Tunisia is struggling with high unemployment and rising violence in its politics. After sounding the alarm for months over the rise of religious extremists, the opposition now warns that the new threat to this North African country's democratic transition are vigilante bands allied to the elected government.(AP Photo/Amine Landoulsi, File)
FILE - This Tuesday, Dec. 4, 2012 file photo shows a member of the leftist UGTT union raising his arms next to riot police officers during a rally to commemorate the 1955 assassination of a historic member, before being were attacked by the League for Protection of the Revolution in Tunis, Tunisia. Two years after the revolution that overthrew a dictator and started the Arab Spring, Tunisia is struggling with high unemployment and rising violence in its politics. After sounding the alarm for months over the rise of religious extremists, the opposition now warns that the new threat to this North African country's democratic transition are vigilante bands allied to the elected government.(AP Photo/Amine Landoulsi, File)
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