Just how much did hate radio fuel the Rwandan genocide? David Yanagizawa, an economics job market candidate from Stockholm University, uses Rwanda’s hilly topography to look at the effect of the Mille Collines “hate radio” on violence.

Not all villages are in line of sight of the two national transmitters. The effect of being so? When a village has full rather than zero radio coverage, civilian violence increased by 65 percent and organized violence by 77 percent.

See his many interesting papers here.