How do you know it is true and not black propaganda? It is a serious question, I want to try to settle it for me. I got a bit more careful about infos when I heard like 'xx is dead'.. 'oh, now he is well again'.

Edit: also the only person who escaped camp 14 turned out to be unreliable (probably pressured to spice up his story). Honestly point me to evidence (and not like because everybody says so). I believe there is strong political motives to paint NK in a bad light (which might be justified of course)

Edit2: maybe the downvoters can link to what convinced them?