Ejovi Nuwere and Japan Probe wrote about a racist "mook" (magazine/book) called Gaijin Hanzai Ura File or Foreign Crimes Secret File published by Eichi publications being widely available in Japan's largest convenience stores and bookstores like Family Mart [wiki] (a large chain of 6,000 stores - Family Mart later promised to pull the book from its stores):
I was able to confirm these reports today when I found that a Family Mart in Saitama Prefecture had 5 copies of the magazine, all of them displayed in the very front of its magazine rack. I purchased one of the copies, so that I could look over the magazine myself. As reported, it labels foreigners as a source of crime and even has pages in which it condemns interracial sex between foreigners and Japanese women
Joi Ito wrote that the tendency to blame foreigners (like Koreans) is a persistent theme in Japan's ultra-right-wing politics:
Crimes by foreigners have been a central talking point of the right wing in Japan including Governor Ishihara of Tokyo. This story of foreign criminals being a public issue is a very old political position. For instance, after the 1923 Great Kanto Earthquake, The Home Ministry declared martial law and blamed the Koreans for crimes. Rumors spread blaming Koreans for looting, arson and even poisoning the well. A great number of Koreans were killed/lynched. The official number is around 231 killed but independent studies put the number closer to 2,500.