Hibiya incendiary incident
The Hibiya incendiary incident (日比谷焼打事件, Hibiya yakiuchi jiken), also known as the Hibiya riots, was a major riot that occurred in Tokyo, Japan, from 5 to 7 September 1905. Protests by Japanese nationalists 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 protests.
Source: Wikipedia — Hibiya incendiary incident (CC BY-SA 4.0)