The Japanese man who stabbed and killed 19 disabled people in 2016 frequently advocated for marijuana legalization. Just weeks before his attack, Uematsu had been diagnosed with cannabis-induced psychosis and paranoia. [7]
Links
[1] https://www.japantimes.co.jp/news/2016/07/27/national/crime-legal/despite-obvious-signs-care-home-killer-slipped-cracks/#.XVW2tOhKiUl
[2] http://rethinkpot.org/tags/knives
[3] http://rethinkpot.org/tags/japan
[4] http://rethinkpot.org/tags/mass-killings
[5] http://rethinkpot.org/tags/uematsu
[6] http://rethinkpot.org/tags/violence
[7] https://www.japantimes.co.jp/news/2016/07/27/national/crime-legal/despite-obvious-signs-care-home-killer-slipped-cracks/#.WzokX7gnaUk