London shared common concerns among many European Americans in California about Asian immigration, described as "the yellow peril"; he used the latter term as the title of a 1904 essay. This theme was also the subject of a story he wrote in 1910 called "The Unparalleled Invasion". Presented as an historical essay set in the future, the story narrates events between 1976 and 1987, in which China, with an ever-increasing population, is taking over and colonizing its neighbors with the intention of taking over the entire Earth. The western nations respond with biological warfare and bombard China with dozens of the most infectious diseases. On his fears about China, he admits, "it must be taken into consideration that the above postulate is itself a product of Western race-egotism, urged by our belief in our own righteousness and fostered by a faith in ourselves which may be as erroneous as are most fond race fancies."