You've probably heard of the Minutemen Project. It's a group that started back in 2005, billing itself as the "neighborhood watch" of the U.S.-Mexico border.

Members took it upon themselves to patrol the border in an effort to thwart illegal immigration as vigilante border guards. Since then, the group has largely fallen off the radar, its leadership fractured because of internal fighting.

There are signs the movement is experiencing a revival in a new and potentially dangerous way. JJ Hensley has been reporting on this for the Arizona Republic and he joins us now.