Yes, it's wrong to shoot a man when he's unarmed. It's also wrong for someone to run away from the police when they tell you to STOP! It's sad what happened to this guy, but instead of stopping, slowly turning around, and dealing with it, he decided to run which makes him a suspect. They have rules to follow and so does he. What are they going to do, let the suspect run and go do somewhere else what they thought he might be doing there?
When a cop asks you to stop then you stop. You don't keep running. The article says he was mentally retarded so this would need to be taken into consideration, but they don't know this when it happens unless there is an obvious clue.
So, what's going to happen here is that cops who were doing their job are going to get into trouble because they accidentally shot a man who was running away from them and looked like he was reaching for something. Of course no one is going to take that into account because when a police officer shoots a man who is running away, black, and mentally retarded they are immediately guilty in the eyes of the public.
It's a thankless job. I'm sure they feel like crap already. Put yourself in the police officer's shoes for once and deal with the stress and crap they do and then consider your job. Which one do you want?
Read about it here.