Used to be in Canada you could use whatever level of force was necessary to prevent the commission of a crime......and in your residence, especially at night, it was open season on invaders. I remember in Bridgewater, NS a guy shot dead a unarmed 16 year old B&E artist......no charges laid.
Now, let me say this.....the death of a 16 year old kid in this was a tragedy.....it could have been me in my JD days........BUT the philosophy then was the correct one, one should NEVER have to surrender anything in the face of evil. That simple.
Wasn't all that long ago either, late 70s, if memory serves.
My sympathies go out to the old guy.......
Oh yeah......recently in Sussex NB an older gentleman killed a guy driving away in his truck after robbing his garage. The old boy had been repeatedly victimized, he knew who was doing it, but lacked proof. When he was robbed the time before and the RCMP proved useless, he told them he was going to take matters into his own hands. He did. Whacked the thief with a .308 rifle as he drove away......elected trial by judge and jury (smart man), claimed he only was trying to mark the truck (wink, wink, nudge, nudge) and was duly ACQUITTED, much to the chagrin of the Crown.
THAT is why we have juries. Looks good on the numbnuts that run this country.