In Mexico, self-defense squads battle violence - Article Photos 8/13

In this photo taken Jan. 18, 2013, a masked armed man checks the identity of a driver at a roadblock at the entrance to the town of El Pericon, near Ayutla, Mexico, Friday, Jan. 18, 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 that local police are unable, or unwilling, to stop. (AP Photo/Dario Lopez-Mills)