[OT] Self-defense in Canada

I just saw this video about a guy in Toronto who experienced a home invasion and was only able to reach someone on 911 on the 5th try - after the invaders had left.
https://www.youtube.com/watch?v=RCFiuiX38TI [2 minutes]
The comments under the video, if true, are quite disturbing in some cases. I was especially troubled about the guy who called 911 and had to be transferred to 4 other 911 operators (around the province) before he finally got one that spoke English!!! Silly me, I would have assumed that fluency in English (and maybe French) was a prerequisite for a 911 operator in this country....
I got to wondering for the umpteenth time about what my rights were with respect to self-defense. As luck would have it, the algorithm put this, video by a Canadian lawyer at the top of my suggested videos list:
https://www.youtube.com/watch?v=-Xolys_2hl4 [8 minutes]
Clearly, we do NOT have anything like Stand Your Ground or Castle Doctrine here! The presenter, who is apparently a practising lawyer, repeatedly mentions a case where a home-owner shot and killed an intruder who had threatened to hurt his elderly mother and was charged with 2nd degree murder. (The video is a year old so I'm curious to know what happened with this case but he doesn't give enough details to research it.)
I expect that if a crisis happened to me where I had to defend myself, I'd just do whatever seemed necessary and hope that the legal system wouldn't screw me over but I wouldn't be so naive as to assume that there would be no consequences.
--
Rhino