Analyzed the role of the media in coordinating and mobilizing insurgency against an authoritarian regime in the context of the Nazi-fascist occupation of Italy during WWII. Studied the effect of BBC radio on the intensity of internal resistance. By exploiting variations in monthly sunspot activity that affect the sky-wave propagation of BBC broadcasting towards Italy, showed that BBC radio had a strong impact on political violence. Provided further evidence to document that BBC radio played an important role in coordinating resistance activities but had no lasting role in motivating the population against the Nazi-fascist regime.
