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May 15 incident

Attempted coup d'état in Japan in 1932

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Through Japanese militarism, Democracy and Right-wing politics

Prime Minister Inukai Tsuyoshi was assassinated by 11 young naval officers. The following trial and popular support of the Japanese population led to extremely light sentences for the assassins, strengthening the rising power of Japanese militarism and weakening democracy and the rule of law in the Empire of Japan.

Background

As a result of the ratification of the London Naval Treaty limiting the size of the Imperial Japanese Navy, a movement grew within the junior officer corps to overthrow the government, and to replace it with military rule. This movement had parallels in the Sakurakai secret society organized within the Imperial Japanese Army. The naval officers established contacts with the ultranationalist Nisshō Inoue and his "League of Blood", and agreed with his philosophy that to bring about a "Shōwa Restoration", it would be necessary to assassinate leading political and business figures (Zaibatsu).

In 1932, during the League of Blood Incident, Inoue's group killed Junnosuke Inoue, the former Minister of Finance and head of the Rikken Minseitō, and Dan Takuma, the Director-General of Mitsui Holding Company, on 9 February and 5 March respectively. While only two high-profile leaders were killed, the group had initially planned to assassinate a total of twenty financial and political leaders.

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