I read about this about 15 or so years ago and watch a documentary about it where there is actual real film from Nanking. And It is NOT nice. There are a few movies on this subject now, one starring Woody Harrelson was pretty good. But its dark, dark subject matter and you won't feel good after watching it. Its kind of that that older movie The killing fields about Kambodia. You just cant really fathom that there are people who would do such things.