The small town of Cuauhtemoc, Mexico (pop. 3,700) has a big problem (Dudley Althaus has the story). It is now the target of 'tribal raids' for hostages and loot by gangs of pistoleros. In a nearby town of San Angel (pop. 250), 15 SUVs loaded with gunmen recently raided the town and took five men hostage.
Here's a neo-feudal moment. To defend themselves (the police and military are unable to provide support), the townspeople have built a moat around the town -- including all access roads. They even manned the moat with volunteer sentries (since removed due to an acknowledgement that they would be insufficient). Good luck.