Merely pointing out the hypocrisy in getting high and mighty about killing an animal, when our food, clothes etc come from the same thing i.e. killing or exploiting animals.
It shouldn't be a case of 'oh this instance of animal cruelty doesn't suit me or benefit me so I'm going to pick this to be annoyed about'. Be consistent.
Also, a civilian killing a child and a soldier killing a soldier are not at all the same, or comparative here (though many would argue against that too). Dumbed down, sure, fundamentally killing is killing, but soldiers sign up for that, children don't.