It's also important to realize that atrocities like this are still happening today.
There are various accounts of people who've escaped the North Korean death camps, but one that comes to my mind regularly is Shin Dong-hyuk, who, as far as we know, is the only person to escape the camps who was actually born there. He never knew any other life before then. I have his biography, and it's absolutely horrible. You read all these accounts, that seem vaguely familiar if you've ever read anything written by holocaust survivors, but then you look at the dates next to them - 1995, 1998, 2001, 2005. It's happening now, while we're sitting here reading this. If you read his accounts, about how living in a hell like that destroys the human spirit, where his own parents and brother were basically strangers to him, fighting over food among themselves - he actually told the guards his mother and brother were preparing to escape, expecting to be rewarded. His actual reward was to be tortured and having to witness the execution of his brother and mother. There are other escapees who shared their own experiences in the camps, and it's worth looking into. We must never forget the past, but I can't understand why we're allowing this to go on. It sickens me.