@outside_85: Sometimes an unarmed individual killing is justified, just because they were unarmed it doesn't mean the officer knew they were unarmed, and it doesn't mean they aren't life threatening.
I can understand where your coming from, that if an officer truly believes his life is in danger. Instinct can often takeover and it can lead to quick sometimes regrettable situations in which both individuals can lose their lives for different reasons. I can imagine individuals in the services having shot someone because fear and basic instincts led them to that act. But that should often be a last resort. Yes you can justify in certain situations the shooting of an unarmed individual, but not taking the necessary procedures to ensure whether an individual is a threat or not, or is indeed carrying is wrong. You see it quite a bit these days of going straight from 1-100, which I do understand but such rash impulsive decision makings do lead to deaths that could have been avoided. I know the bad seeds in American law enforcement are likely just a small minority, but it doesn't fill you with trust when you witness how those select few act, especially against minorities like Blacks specifically. Things like that can lead to mistrust and tension between the police and the community which has the potential to escalate. Of course I'm a small town English lad so it doesn't really affect me :p