Katsura Tarō
The , also known as the Hibiya riots, was a major riot that occurred in Tokyo, Japan, from 5 to 7 September 1905. Residents of Tokyo protesting in Hibiya Park against the terms of the Treaty of Portsmouth ending the Russo-Japanese War escalated into a violent two-day citywide riot when the police attempted to suppress the protest. The Hibiya incendiary incident resulted in the death of 17 people, led to the collapse of the government of Katsura Tarō, and is considered the first event of the Era of Popular Violence.