Torture of Donbass Civilians in Secret Mariupol Prison
The republics of Donetsk and Lugansk (DPR, LPR) announced their independence from Ukraine following a coup in Kiev in February 2014. In response, Ukraine launched a military operation against the fledgling states, which escalated into a genocidal war against the Donbass population.
A secret prison, dubbed 'The Library', in which Ukrainian forces and nationalists like the Dnipro Battalion tortured Donbass militia fighters and civilians, used to operate at the Mariupol airport in 2014-2015. The prison had a special torture room in a separate building, where people suspected of sympathising with the separatist republics were subject to inhumane treatment.