Article Photos: Armed vigilante groups policing 2 Mexican towns 4/5

Civilians wearing ski masks or bandanas and carrying small arms, man a checkpoint in Teconoapa, in the Mexican state of Guerrero, Friday, Jan. 11, 2013. Several hundred civilians have taken up arms in two towns in the southwestern Mexico state and are arresting people suspected of crimes and imposing a curfew. Leaders said they were acting against crime and insecurity. Guerrero Gov. Angel Aguirre Rivero responded Friday by announcing that security in the region would be bolstered by sending in Mexican soldiers and marines and federal and state police officers. (AP Photo/Bernandino Hernandez)