The Red Flag Incident (Japanese: 赤旗 事件, Hepburn: Akahata Jiken) refers to a political rally that took place in Tokyo, Japan, on June 22, 1908. In the mixed political climate of the late Meiji and early Taishō period, celebrated political activist and anarchist Koken Yamaguchi was discharged from a term in prison. His release was met with by crowd waving red flags carrying Anarchist Communist slogans such as Museifu Kyōsan (無政府共産, "anarcho-communism") and Kakumei (革命, "revolution") and a chorus of communist songs. The police attacked and suppressed the small demonstration, and ten prominent activists, including Ōsugi Sakae, Hitoshi Yamakawa, Kanno Sugako, and Kanson Arahata, were arrested.