Ryu Ota (Japanese: 太田 龍 / 太田 竜, Hepburn: Ōta Ryū; also Ryu Ohta; 16 August 1930 – 19 May 2009) was a Japanese political activist and writer. Initially a supporter of the Japanese New Left, he later turned to green politics before becoming an antisemitic conspiracy theorist.
Source: “Ryu Ota”, English Wikipedia (CC BY-SA 4.0), excerpt