It's 2am and you're asleep.
Your family comprises of a husband, a pregnant wife and an infant.
Your dog alerts you that someone is in your yard.
Your locked and GATED yard.
You grab your gun and presumably shoot at what you can see.
You end up shooting the intruder in the head.
He's still alive.
Police and ambulance arrive.
Turns out the intruder was a 14 year old boy without a weapon who was simply coming to steal what he could from you.
Your surveillance shows he had a lookout (on a bike).
You're arrested for shooting the child.
Fair?