For two years, Clemencia Rodr guez did fieldwork in regions of Colombia where leftist guerillas, right-wing paramilitary groups, the army, and drug traffickers made their presence felt in the lives of unarmed civilians. Here, Rodr guez tells the story of the ways in which people living in the shadow of these armed intruders use community radio, television, video, digital photography, and the Internet to shield their communities from armed violence's...