Could it be Armenian retaliation for overthrowing their clown Prime Minister?
https:// en.wikipedia.org/wiki/Minasyan
According to the MSM there is no evidence that he's even linked to Armenia.
"Those first baseless, Islamophobic assumptions melted away quickly enough — only to be replaced with new social media notions, none evidently tethered to fact. Everything from Armenian nationalism (the attack came on the eve of Armenian Genocide Remembrance Day) to autism…"
https:// www.thestar.com/news/gta/2018/04/24/who-is-alek-minassian-the-man-accused-in-the-van-rampage.html