In 2014, Japan’s cabinet approved a significant change to national security policy. Previously barred from using military force, except in cases of self-defence, a constitutional reinterpretation by the cabinet allowed “collective self-defence”—using force to defend itself and its allies. The decision was controversial, considering post-war pacifism is firmly entrenched in Japanese national identity. I analyse how national security has been portrayed in the policymaking process for reinterpreting the Constitution. Meanwhile, since the early 2010s, Japanese society has been rocked by demonstrations opposing this. I explore the rise of a new youth activist movement in response to the proposed legislation. In particular, I argue that new ideologies and strategies appealed to young people in the organising of various protests, focusing on how they interpret the national security discourse and locating these social movements in Japanese postwar peace activism.

中文翻译：

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安全范式和社会运动

2014 年，日本内阁批准了对国家安全政策的重大改变。此前，除自卫外，禁止使用军事力量，内阁对宪法的重新解释允许“集体自卫”——使用武力保卫自己及其盟友。考虑到战后和平主义在日本的民族认同中根深蒂固，这一决定是有争议的。我分析了在重新解释宪法的决策过程中如何描绘国家安全。与此同时，自 2010 年代初以来，日本社会一直被反对这一做法的示威活动所震撼。我探讨了响应拟议立法的新青年激进主义运动的兴起。特别是，我认为新的意识形态和策略在组织各种抗议活动时吸引了年轻人，