Government suppression was especially severe during the early 20th century, particularly from the 1930s until the early 1940s, when the growth of Japanese nationalism and State Shinto were closely linked. Under the Meiji regime lèse majesté prohibited insults against the Emperor and his Imperial House, and also against some major Shinto shrines which were believed to be tied strongly to the Emperor. The government strengthened its control over religious institutions that were considered to undermine State Shinto or nationalism, arresting some members and leaders of Shinshukyo, including Onisaburo Deguchi of Oomoto and Tsunesaburō Makiguchi of Soka Kyoiku Gakkai (now Soka Gakkai), who typically were charged with violation of lèse majesté and the Peace Preservation Law.