Article Photos: In Mexico, self-defense squads battle violence 10/13

In this photo taken Friday Jan. 18, 2013, a masked and armed man gestures to police driving by as he stands guard at 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)