Why Are Thousands Protesting Japan’s Constitutional Revision In Tokyo?

Thousands of demonstrators gathered outside Japan’s National Diet Building in Tokyo on Wednesday to protest the government’s push to revise the country’s pacifist constitution and expand military capabilities, according to organisers and local reports. The rally was directed against the administration led by Prime Minister Sanae Takaichi, amid growing public debate over Japan’s evolving security and defence policies.

Organisers estimated that around 10,000 people participated in the demonstration, holding placards with messages such as “Stop constitutional revision and military expansion” and “Do not destroy Article 9.” Protesters also raised slogans opposing missile deployments and calling for the government to halt what they described as an accelerated military buildup.

Many participants expressed concern that proposed constitutional changes could weaken Japan’s long-standing pacifist stance. One protester, Yuki Hoshino, said the government was advancing the revision agenda without adequate public consent, while another demonstrator, Ryosuke Tanji, emphasised that Japan must never repeat the tragedies of war and stressed the importance of preserving historical lessons from the past.

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The protests come amid reports that Japan’s ruling Liberal Democratic Party has been drafting revisions to key national security documents. These proposals reportedly include strengthening air defence systems, enhancing sustained combat capabilities, and developing advanced submarine technologies capable of carrying long-range missiles as part of a broader shift towards “counterstrike capabilities.”

Japan’s post-war constitution, which came into force in 1947, includes Article 9, under which the country renounces war and prohibits maintaining traditional military forces for combat purposes. The clause has long been regarded as the foundation of Japan’s pacifist identity, though successive governments have interpreted it in ways that allow limited self-defence capabilities.

Critics, including academics and civil society groups, argue that the proposed changes mark a significant departure from Japan’s post-war security doctrine. Supporters of revision, however, say the changes are necessary to respond to evolving regional security threats. The growing public protests highlight deep divisions within Japanese society over the country’s future defence posture and constitutional direction.

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