Tomorow is the anniversary of the aum shin sarin gas attack.
>The Tokyo subway sarin attack (地下鉄サリン事件, Chikatetsu Sarin Jiken, "Subway Sarin Incident") was an act of domestic terrorism perpetrated on 20 March 1995, in Tokyo, Japan, by members of the cult movement Aum Shinrikyo. In five coordinated attacks, the perpetrators released sarin on three lines of the Tokyo Metro (then Teito Rapid Transit Authority) during rush hour, killing 13 people
https://en.wikipedia.org/wiki/Tokyo_subway_sarin_attack