Then I would be assuming that myself, my DH and 95% of my family are all morons. Geez, who is jumping to conclusions now. ALL I did at first was point out that the guy probably knew exactly what he was shooting at and so I called BS on the fact that he "didn't know it was the neighbor's dog".
Then someone said it was ok to shoot at things not fully identified. YOU claimed people could easily distinguish things before shooting. All I did was point out that no, people don't always and you'd better make DAMN SURE you know what you are shooting at before pulling the trigger. Mistakes can and DO happen. Call them morons to make yourself feel better. I think they are people who convinced themselves that they saw what they wanted to see and made a horrible, tragic mistake.
I would argue that it is better for gun advocates and hunters to be very careful about shooting (MOST are) but also be fully aware and admit that mistakes are very easy to happen. Safety only comes with full awareness of what can go wrong.