An armed and masked man guards a roadblock at the entrance to 

An armed and masked man guards a roadblock at the entrance to the community of Cruz Quemada, near Ayutla, early Saturday, Jan. 19, 2013. 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
An armed and masked man guards a roadblock at the entrance to the community of Cruz Quemada, near Ayutla, early Saturday, Jan. 19, 2013. 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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