In this photo taken Friday Jan. 18, 2013, masked and armed men 

In this photo taken Friday Jan. 18, 2013, masked and armed men guard a roadblock in Las Mesas, near the town of Ayutla, Mexico.Hundreds of  men in the southern Mexico state of Guerrero have taken up arms to defend their villages against drug gangs, a vigilante movement born of frustration at extortion, killings and kidnappings in a region wracked by violence. (AP Photo/Dario Lopez-Mills)
Associated Press
In this photo taken Friday Jan. 18, 2013, masked and armed men guard a roadblock in Las Mesas, near the town of Ayutla, Mexico.Hundreds of men in the southern Mexico state of Guerrero have taken up arms to defend their villages against drug gangs, a vigilante movement born of frustration at extortion, killings and kidnappings in a region wracked by violence. (AP Photo/Dario Lopez-Mills)
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