Japan Revolutionary Communist League National Committee

The New Left (新左翼, shin-sayoku) in Japan refers to a 1960s Japanese movement that adopted the radical political thought of the Western New Left, breaking from the established Old Left of the Japanese Communist Party and Japan Socialist Party. In the 1970s the Japanese New Left became known for violent internal splits and terrorism, and its influence waned, but it continued to develop new political ideologies such as Anti-Japaneseism (反日亡国論, hanNichi-bokoku-ron).

In 1956 Nikita Khrushchev secretly denounced Stalinism in his speech "On the Cult of Personality and Its Consequences". This speech went unreported in official Party organs, so the Stalinist Japanese Communist Party did not offer any reaction. But copies of it circulated around the world and had a great impact on youth and student Communist organizations. In 1957 the Japan Trotskyist League was founded by young dissidents from the Communist Party such as Kuroda Kan'ichi and Ryu Ota, which quickly split into a Fourth International sect and an "post-Trotskyist, anti-Stalinist" sect called the Revolutionary Communist Party.

In 1958 a Maoist group split from the Communist Party advocating violent revolution. In 1959 the Zengakuren, where the violent radicals had concentrated, broke into the Diet of Japan during discussions of the Treaty of Mutual Cooperation and Security between the United States and Japan, eliciting praise from a segment of the Japanese population. It was widely noted that the Old Left had not taken any such extreme measures, and thus the New Left began its ascendance.

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