Uesugi Shinkichi (上杉 慎吉, Uesugi Shinkichi; August 18, 1878 – April 7, 1929) was a political philosopher and legal scholar who was active in Meiji, Taishō, and early Shōwa period Japan. One of the founding figures of right-wing Shintō ultranationalism, he helped sow the seeds for radical right-wing activism in 1930s Japan, although he died shortly before a wave of assassinations and assassination attempts that his ideas helped inspire.
Source: “Uesugi Shinkichi”, English Wikipedia (CC BY-SA 4.0), excerpt