Special Higher Police (Tokkō) expands political surveillanceJan 1, 1911Labels: Special Higher, Home MinistryWikipedia
Japanese Communist Party founded undergroundJul 15, 1922Labels: Japanese Communist, TokyoBritannicaJCP
Universal Manhood Suffrage Law passedMar 29, 1925Labels: Universal Suffrage, Imperial DietNDL ArchivesJapan Society
First universal-suffrage general election heldFeb 20, 1928Labels: 1928 General, Universal SuffrageWikipediaNDL Archives
March 15 Incident mass arrests of leftistsMar 15, 1928Labels: March 15, Peace PreservationWikipediaBritannica
Senki magazine begins proletarian publicationMay 1, 1928Labels: Senki, Proletarian LiteratureWikipediaMDPI
April 16 Incident arrests expand anti-left campaignApr 16, 1929Labels: April 16, Anti-left CampaignWikipediaMDPI
Peace Preservation Law repression intensifies via “tenkō”Jun 15, 1932Labels: Tenk, Peace PreservationWikipediaWikipedia
Kobayashi Takiji dies after police tortureFeb 20, 1933Labels: Takiji Kobayashi, Special HigherWikipediaBritannica