Since 2014, the regimes installed by Russia and its local collaborators in occupied regions of Ukraine have been arbitrarily detaining civilians on a massive scale. The Ukrainian government puts the number of those currently in detention at over 16,000. Journalists, activists, local politicians: just about anyone the occupation authorities take a dislike to is in danger of being taken prisoner. Some are held for a few days, others for years. FRANCE 24's Gulliver Cragg investigates with a consortium of media under the "Forbidden Stories" umbrella.