Eating Habits and Famine

I was reading http://www.crimelibrary.com/ and came across the eating habits of Albert Fish. He wrote in a letter that he aquired his taste from a friend who was stranded in China for a brief period, discovered that he enjoyed long pig and continued to indulge his tastes back in the United States, sharing his meal with Albert Fish who took a liking to this.

The tale of famine, butchering kids and selling their meat in Chinese butcher shops sounds extraordinarily outlandish. Is there any evidence that this actually happened in China and that it was accepted or ignored by the general populace? Is Albert Fish simply making up a racist myth to give some background to his unusual tastes?

http://www.crimelibrary.com/fish/fish/fishcapture.htm has the confessional letter he wrote to the Budds explaining their daughter’s disappearance.