I'm not really clear about what you are asking. On the one hand, it sounds like you're asking for a thesis statement for a paper, on the other, it sounds like you are just looking to learn something about this episode.
If I were writing a paper or an essay about this atrocity I can think of a couple topics I might use.
- Comparing it to other atrocities. I'd look to see how bad it was compared to other atrocities committed during WWII. My thesis would then discuss how bad it was in comparison.
- Trying to explain why it happened. I would seek to understand why the Japanese committed this atrocity. My thesis would attempt to provide an explanation.
I hope this helps, but I'm not 100% sure of what you are asking.
This is an interesting question and answers can be potentially very broad. So, let me offer a few perspectives that you might develop into a solid thesis. How about you explore Japan as a imperial power during this time. You can also look at Japan as an imperial power as it sought to colonize Korea. Ask why Japan started now? What was their motivation?
Another angle to study this episode is to ask about the scale of the massacre. Some people suggest that it was upward to 300,000 and some Japanese scholars say it was 100,000-200,000 and that most of these deaths were military related. So, there is a lot of debates around these numbers.
There are many factors that contributed to the rape of Nanking, which include :the Emperors imperialistic goals and Japanese traditions causing the Rape of Nanking; the events that lead to and occurred in the massacre, including killing and raping; finally the strange and different effects that resulted from the massacre: including the silence of the Chinese and the Japanese denial, the relations between China and Japan, and the world’s reaction to the massacre.
I have been researching this subject for 3 months. I have read the book by Iris Chang.
P.S A thesis depends on the main points you will write in your body paragraphs