Tens of thousands of Japanese citizens descended on the National Diet Building in Tokyo on 20 August to protest what demonstrators described as the Takaichi government's distorted view of history and accelerating military expansion. The rally, one of the largest public demonstrations against Prime Minister Sanae Takaichi since she took office, drew an estimated 15,000 in-person participants and another 25,000 online, according to organisers.

What Brought Protesters to the Streets

The central demand of the rally was pointed: politicians who refuse to acknowledge Japan's wartime history of aggression should resign immediately. Protesters carried banners reading 'Oppose military expansion' and chanted slogans such as 'Defend the pacifist Constitution' and 'Takaichi, step down now.'

The protest was triggered in part by Takaichi's conduct at the national memorial service for the war dead on 15 August, where she made no mention of 'reflection' on Japan's past wars of aggression — an omission that drew sharp criticism from peace groups and opposition politicians alike.

Opposition Leaders Weigh In

Mizuho Fukushima, leader of Japan's Social Democratic Party, criticised Takaichi's handling of the Three Non-Nuclear Principles at the Hiroshima and Nagasaki atomic bombing commemorations earlier this month. Fukushima said Takaichi failed to clearly affirm that Japan would continue to uphold the principles — a foundational pillar of post-war Japanese security policy. 'This is a very serious issue,' Fukushima said.

Voices from the Crowd

Kiyomasa Komesu, a protester from the southern island prefecture of Okinawa, said the Takaichi government is pursuing a course of military expansion and that Japan's current policies show 'a strong belligerent streak.' Another demonstrator, who identified himself as Sakuma, warned that recent government moves — including the establishment of a national intelligence agency — signal that 'the sound of war is approaching.'

Kojima, a teacher who travelled from Kanagawa Prefecture to attend the rally, said she is deeply concerned that even ordinary Japanese companies are redirecting funds and resources toward drones and weapons manufacturing.

The Military Buildup Behind the Protests

The Takaichi government has in recent months accelerated its defence posture: continuing to increase defence spending, easing restrictions on exports of lethal weapons, pushing ahead with the deployment of intermediate- and long-range missiles, expanding offensive military capabilities, and pursuing a revision of Japan's pacifist Constitution. Takaichi has repeatedly declined to clarify whether Japan will continue to uphold the Three Non-Nuclear Principles, fuelling sustained anxiety among Japanese peace groups.

Notably, this comes amid a broader regional security shift, with Japan's defence budget on track to double as a share of GDP — a trajectory that critics argue marks a fundamental departure from the post-war order.

What Comes Next

With opposition parties galvanised and civil society mobilising, pressure on the Takaichi administration over its constitutional and security agenda is likely to intensify. The debate over Japan's pacifist identity — and how far it can be stretched — is now firmly in the public domain.