Satohata Takahashi and the Society for the Development of Our Own
This topic has been floating around as a bundle of notes in the Mythic Detroit archives for years, but more information is available these days. The nutshell version is that a man going by the name of Satohata Takahashi established in 1930s Detroit (among other cities) a pro-Japanese black nationalist organization called the Society for the Development of Our Own (sometimes just The Development of Our Own"). However, in addition to the pre-war espionage angle, there are questions about Takahashi's true identity, apparent conflict with the early Nation of Islam, and just generally
After Takahashi had been deported, the May 1938 edition of the American Journal of Sociology summarized his activities in Detroit.
There was a Time Magazine article about the 1942 arrest of over 100 pro-Japanese African-American activists, with the title of "Takahashi's Blacks".
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