Apparently this lady had a tiny little dog it appears. He does not bite according to her, and the neighbor doesn't dispute this, nor does he claim the dog did anything aggressive. He merely went to a neighbors home wagging his tail. He does say "He TRIED to come in our house, which very quickly changes to "He came in the house, and came after me". You hear another woman in the background saying she is deathly afraid of dogs. You can tell it's a very small breed when the women crying goes near his lifeless body. I stopped the vid at that point as I don't wanna see a dead dog.
So...
I know that as far as the law is concerned, a dog is seen as property
A dog should be leashed at all times if not in your yard
A yard should be secured so that a dog doesn't get away and roam
And I'm sure a homeowner has the right to protect themselves if a stray dog were to just wander in and "come at them".
With that said, there would be some consequences from me, if I knew that my dog was 100% non-aggressive, but I even know he got away due to my fault, and even though he went to someone else's property. I can only think if this were my Pug or my Chihuahua or my Husky. None are/were aggressive in the slightest. If my neighbor killed my dog, I just know I'm not taking it.
She goes to her dog around the 35 second mark and you can hear the argument prior.