The Japanese Communist Party was founded in Tokyo on 15 July 1922. Its early leadership was drawn from the anarcho-syndicalist and Christian socialist movements that developed around the turn of the century. From the former came Yamakawa Hitoshi, Sakai Toshihiko, and Arahata Kanson, who had all been supporters of Kōtoku Shūsui, an anarchist executed in 1911. Katayama Sen, another early leader, had been a Christian socialist for much of his political life. The three former anarchists were reluctant to found the JCP, with Yamakawa shortly after arguing that Japan was not ready for a communist party and calling for work to be done solely within labor unions. Katayama's theoretical understanding of Marxism also remained low.