In 1911, the Taigyaku Jiken (a case of high treason) was developed and was used as an excuse to oppress socialists by the government at that time, and 12 people, including Shusui KOTOKU, were executed for attempting to assassinate Emperor Meiji.
明治44年（1911年）には大逆事件が生じ、時の政権から社会主義者弾圧の口実に使用され、明治天皇を暗殺しようとしたとして幸徳秋水ら12人が死刑に処された。