[2] Kenji Miyamoto officially joined the Japanese Communist Party (JCP) two months after graduation in May 1931.

[2] In 1932 Miyamoto married author and humanitarian activist Yuriko Chūjō who had returned from living in the Soviet Union together with Yuasa Yoshiko.

Chūjō was editor of the Marxist literary journal Hataraku Fujin (Working Women), a leading figure in the proletarian literature movement and a member of the JCP.

[3] Since its founding in 1922, the JCP had been outlawed under the Peace Preservation Law and subjected to repression and persecution by the government of Imperial Japan.

Gen. Douglas MacArthur, the American Supreme Commander for the Allied Powers in Japan, banned Miyamoto and 23 other high ranking JCP members from holding any public office.

He oversaw the removal of the phrase "proletarian dictatorship" following the JCP convention in 1976 and replaced it with a declaration supporting democracy and freedom.

[1] Following the fall of communism in eastern Europe, Miyamoto stated that it was a defeat for Stalinism and the Soviet-backed governments, but not for socialism.

[2] Miyamoto remained active within the JCP and continued to hold the post of chairman until his official retirement in September 1997.