Is it this article. The bakery incident was around June 12, 2017 and this article was dated July 7,2017. It's most likely the DiManno bakery they are referring to.
I agree that when Humphreys wrote in that article that a "Toronto-area bakery that Cun trera frequently hung out in was recently firebombed," Humphreys was referring to the Di Manno bakery.