Looking at it from another point of view. We had a Japanese girl come and stay with us in 2000 she wanted to learn about Antiques. She was very quiet, very polite with wonderful manners and a lovely person. However, she had no knowledge of what had happened with the Japanese side of WW2 as, she had never learned about it. The schools did not teach it and people in Japan did not speak of it.
One day she said she did not want to watch a programme about Elizabeth I. I asked her why and she said in those days long ago, they cut off peoples heads!!!! I said to her, Miwako ,they did this in recent history. She replied that was not true and she never heard of that happening.
She loved nature and animals and particularly Dolphins when I told her that Japanese people killed dolphins and ate them, again she would not believe me and was horrified that I though that.
So, it seems that the younger generation in Japan have been kept away from the unpleasant things in Japanese history and life.