Jasenovac concentration camp
All inmates suffered from some kind of mental health problems.  Some could not stop thinking about food; others became paranoid; some had delusions; some lost control of themselves.  Others seemed to lose their sense of hope.  Some inmates reacted by trying to write about what was happening to them.  For example, Nikola Nikolić, Djuro Schwartz, and Ilija Ivanović all tried to memorize and even write about events, dates and details.  This was very dangerous, since writing was punishable by death and tracking dates was hard.