New Japanese Textbook Draws Fire

Tokyo's school board has adopted a new high school textbook that has some people upset:

TOKYO (Reuters) - Tokyo's education board adopted on Thursday a history textbook that critics say whitewashes past Japanese militarism for use at 26 junior high schools in the capital, a decision that could anger China and South Korea. Japan's Education Ministry in April approved a new edition of the textbook, written by nationalist scholars, sparking protests from China and South Korea where bitter memories of Japan's aggression before and during World War II persist.

Critics say the history textbook, sponsored by the Japanese Society for History Textbook Reform (Tsukurukai), plays down the 1937 Nanjing Massacre in China, ignores the sexual enslavement of women for Japanese soldiers and depicts Japanese wartime actions as aimed at liberating other Asian countries.

I agreed with everything this said until it came to this part:

Opponents of the textbook are worried that given the rise of what some see as nationalism in certain quarters of Japanese society, many state schools may adopt the textbook.

Why is it that they are afraid of the Japanese having "nationalism in certain quarters"? Are the Japanese afraid of themselves? Whats going on here?

[Thanks to Demicidal for emailing this story]