To deflect the cultural relativists and naybobs who make a sport of poking holes in any argument or social movement, it’s probably a good idea to give a review of the “GAIJIN HANZAI UNDERGROUND FILES” publication. and why it’s symptomatic of so much of what is wrong about a media which has insufficient safeguards against hate speech and defamation of ethnic groups.

Human rights activists said the magazine was indicative of the climate of fear of foreigners created by conservative newspapers and politicians, notably the governor of Tokyo, Shintaro Ishihara.

“It goes beyond being puerile and into the realm of encouraging hatred of foreigners,” Debito Arudou, a naturalised Japanese citizen, told the Guardian. “The fact that this is available in major bookstores is a definite cause of concern. It would be tantamount to hate speech in some societies.”

One section is devoted to the alleged tricks foreign-run brothels use to fleece inebriated Japanese salarymen, while another features a comic strip retelling, in graphic detail, the murders of four members of a Japanese family by three Chinese men in 2003.

Mr Arudou accused the mainstream press of exploiting the supposed rise in foreign crime by failing to challenge official police figures. Although the actual number of crimes has risen, he said, so has the size of the foreign population.

“The portrayal [of foreign criminals] is not one of a neutral tone,” he said. “They don’t put any of the statistics into perspective and they don’t report drops in certain crimes.”