During world war two slavery was quite massive. Shintoism did not seem to have had a problem with these abuses. https://en.m.wikipedia.org/wiki/Slavery_in_Japa

During world war two slavery was quite massive. Shintoism did not seem to have had a problem with these abuses. https://en.m.wikipedia.org/wiki/Slavery_in_Japan https://en.m.wikipedia.org/wiki/Slavery_in_Japan ... more than 10 million Chinese civilians were mobilized by the Kōa-in (East Asia Development Board) for forced labour.[32] According to the Japanese military's own record, nearly 25% of 140,000 Allied POWs died while interned in Japanese prison camps where they were forced to work (U.S. POWs died at a rate of 27%).[33][34] More than 100,000 civilians and POWs died in the construction of the Burma Railway.[35] The U.S. Library of Congress estimates that in Java, between 4 and 10 million romusha (Japanese: "manual laborer"), were forced to work by the Japanese military.[36] About 270,000 of these J Javanese laborers were sent to other Japanese-held areas in South East Asia. Only 52,000 were repatriated to Java, meaning that there was a death rate as high as 80%.[37]