I found another one in Margaretta Eager's book, on Chapter 22:
It was very sad to me to witness the wrathful vindictive spirit that the war raised in my little charges. One of the illustrated papers had a picture of the baby children of the Crown Prince of Japan. Marie and Anastasie came running across to see the picture, and wanted to know who those queer little children were. I told them, and with a look of hatred coming into her sweet little face Marie slapped the picture with her open hand. "Horrid little people," said she; "they came and destroyed our poor ships and drowned our sailors." I explained to her that it was not these little children, who were only babies younger than Anastasie. So she said, "Yes; those little babies did it. Mama told me the Japs were all only little people."