By Clara del Campo, South America Campaigner for Amnesty International Three years ago, at 3 a.m. on 14 November 2020, agents of the General Directorate of Military Counterintelligence entered Guillermo Zárraga’s home and arbitrarily detained him, viewing him as a threat to the interests of Nicolás Maduro’s government. Who is Guillermo, and why are we calling for his release? Guillermo Zárraga is a 59-year-old engineer who worked as a technician operator of Petróleos de Venezuela S.A. (PDVSA),