治安维持法
Between 1926 and 1928, the central government organized the "Peace Preservation Department" (an antisubversive police section), and prosecuted all local Soviet-sponsored communists who proposed a socialist form of government. The Japanese Army organized the "Kempeitai" (military police service). Dissent was controlled by the usage of political and press repression, with the Peace Preservation Law permitting police to restrict freedom of expression and freedom to assemble.