Rubuta ci gaba don wannan sakin layi - A watan Janairun 1931, Walker ya fara ziyarar Soviet Union, yana halartar Makarantar Lenin ta Duniya a Moscow. Ya koma Ostiraliya a watan Maris na 1933 kuma ya canza sunansa zuwa Richard Dixon a ƙoƙarin kauce wa kulawar tsaro, wanda ya lakafta shi a matsayin "mai juyin juya hali mai haɗari". Ya zama babban sakataren CPA a 1937. A ranar 25 ga Maris 1939 ya auri Dorothy Jean Button a ofishin rajista a Arewacin Sydney. An zabe shi shugaban kasa na CPA a shekarar 1948. A cikin 1945 ya kai hari kan manufar White Australia a matsayin wariyar launin fata da cin zarafi, kuma ya wakilci CPA a hukumar Petrov ta sarauta a 1954. Kodayake yana da aminci ga Tarayyar Soviet, ya yarda da matsayin 'yancin kai na CPA a cikin shekarun 1960 kuma bai yarda da mamayewar 1968 ba.
na Czechoslovakia. Dixon ya yi ritaya a matsayin shugaban kasa na CPA a shekarar 1972 kuma ya mutu a shekarar 1976 na cutar hawan jini a Bankstown.