The story of one worker in Russia's propaganda business. Russian journalist Vitaly Bespalov spent three months working at the Internet Research Agency in St. Petersburg - the internet troll farm accused of meddling in the 2016 US presidential election. He tells Manuela Saragosa what it was like. And Lisa-Maria Neudert, computational propaganda researcher at the Oxford Internet Institute, explains how modern propaganda operations work. (Photo: Trump supporters during the 2016 US election, Credit: Getty Images)