The Comintern realized the importance of Japan in achieving successful revolution in East Asia and actively worked to form the Japanese Communist Party, which was founded in July 1922. The announced goals of the Japanese Communist Party in 1923 included the unification of the working class as well as farmers, recognition of the Soviet Union, and withdrawal of Japanese troops from Siberia, Sakhalin, China, Korea, and Taiwan. In the coming years, authorities tried to suppress the party, especially after the Toranomon Incident when a radical student under the influence of Japanese Marxist thinkers tried to assassinate Prince Regent Hirohito. The 1925 Peace Preservation Law was a direct response to the perceived "dangerous thoughts" perpetrated by communist elements in Japan. The liberalization of election laws with the General Election Law in 1925 benefited communist candidates, even though the Japan Communist Party itself was banned. A new Peace Preservation Law in 1928, however, further impeded communist efforts by banning the parties they had infiltrated. The police apparatus of the day was ubiquitous and quite thorough in attempting to control the socialist movement. By 1926, the Japan Communist Party had been forced underground, by the summer of 1929 the party leadership had been virtually destroyed, and by 1933 the party had largely disintegrated. Pan-Asianism was characteristic of right-wing politics and conservative militarism since the inception of the Meiji Restoration, contributing greatly to the pro-war politics of the 1870s. Disenchanted former samurai had established patriotic societies and intelligence-gathering organizations, such as the Gen'yōsha (玄洋社 "Black Ocean Society", founded in 1881) and its later offshoot, the Kokuryūkai (黒竜会 "Black Dragon Society" or "Amur River Society", founded in 1901). These groups became active in domestic and foreign politics, helped foment pro-war sentiments, and supported ultra-nationalist causes through the end of World War II. After Japan's victories over China and Russia, the ultra-nationalists concentrated on domestic issues and perceived domestic threats such as socialism and communism. Emerging Chinese nationalism, the victory of the communists in Russia, and the growing presence of the United States in East Asia all worked against Japan's postwar foreign policy interests. The four-year Siberian expedition and activities in China, combined with big domestic spending programs, had depleted Japan's wartime earnings. Only through more competitive business practices, supported by further economic development and industrial modernization, all accommodated by the growth of the "zaibatsu", could Japan hope to become dominant in Asia.