FYI
The best resource I found so far is http://www.dailynk.com/english/ . At least one more story like the OP's can be found here http://www.dailynk.com/english/sub_list_last.php?page=1&...
There is an organization that tries to do something about this http://libertyinnorthkorea.org/ . They have some videos as well that are worth watching http://www.youtube.com/user/linkglobal