The Era of Popular Violence (Japanese: 民衆騒擾期, minshū sōjō ki) was a series of violent mass protests and riots that occurred in Japan from 1905 to 1918. The Era of Popular Violence is considered to have begun with the Hibiya Incendiary Incident in September 1905 and culminated in the Rice riots of 1918, which lasted from July to September of that year.