OCR Specification focus:
‘Radicalism and repression in post-war Japan; the 1923 earthquake’
Japan after the First World War entered a turbulent period, marked by radical ideologies, authoritarian repression, and the devastating 1923 Great Kantō Earthquake, which reshaped society and politics.
Post-war Radicalism in Japan
The end of the First World War left Japan both emboldened by victory and unsettled by internal strains. Economic inflation, labour unrest, and political reform movements created fertile ground for radicalism.
Growth of Left-wing Movements
Socialist and communist groups gained momentum, inspired by the Russian Revolution of 1917.
The Japan Socialist League (1920) openly advocated Marxist ideas but was swiftly banned by the government.
Underground communist cells developed throughout the 1920s, attracting workers and intellectuals disillusioned with inequality.
Radicalism: The advocacy of fundamental political, social, or economic reform, often involving a challenge to established systems of authority
Labour and Farmers’ Movements
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FAQ
The Tokkō were central in suppressing dissent during the post-earthquake chaos. They investigated suspected radicals, censored material, and infiltrated labour organisations.
After the earthquake, they extended their activities to monitor Korean residents, socialists, and anarchists under the guise of public safety. This solidified their role as a tool of state repression well into the 1930s.
Anti-Korean prejudice existed before 1923, rooted in Japan’s colonisation of Korea. After the disaster, rumours spread that Koreans were looting, poisoning wells, and committing arson.
These claims justified vigilante violence. Authorities often tolerated or failed to prevent killings, framing repression as a defence of order. The scapegoating reflected wider anxieties about empire and ethnicity.
The murder of anarchist Ōsugi Sakae, his partner Itō Noe, and his nephew by Amakasu Masahiko revealed the willingness of the military police to use extrajudicial violence.
Public awareness of the killings generated both outrage among liberals and fear among radicals. Rather than punishment, Amakasu received a short prison term, reinforcing the perception that military police operated above the law.
Emergency decrees normalised government intervention in daily life.
Censorship laws tightened as radicals were silenced under the pretext of crisis.
Police powers expanded permanently, shaping a security state.
The earthquake created a precedent where national emergencies justified repression, eroding trust in democratic politics and reinforcing loyalty to authoritarian institutions.
The disaster destroyed factories, warehouses, and docks vital to trade. Fires consumed business districts, while railways and roads collapsed, paralysing transport.
Recovery costs were immense, straining state finances and driving inflation higher. Unemployment surged as businesses closed, intensifying worker discontent. This fed into post-war radicalism while simultaneously giving the government reason to tighten control.
