[Found on the web -- hard to watch]: Behind Bars 2: The World’s Toughest Prisons - Colony 100, Kharkiv, Ukraine | Free Documentary
video Note: The Putin image that appeared on LinkedIn when I posted it there was not part of my original submission. The above was the original image in the submission, which did not appear on LinkedIn (which evidently had replaced it with an image of V. Putin). Russian appears to be the lingua franca of this Behind Bars institution, so far as I could tell, despite the Ukrainian national colors on its walls. jb: Comments to the video are quite informative.