Inside Russia’s Revival Of Stalinist 'Filtration Camps'

"It was like a true concentration camp." 

This is how Oleksandr, a 49-year-old man from Mariupol, described where he and his wife Olena were taken in by Russian security officers. Speaking to a reporter for the BBC, the couple was fingerprinted, photographed and interrogated for hours, and their phones searched for material that could somehow identify them as “Nazis.”