Goodness, there are some misconceptions in this thread.
First of all, there is no such thing as shooting to wound. In fact, a cop saying he shot to wound could be in serious legal trouble, as the standard for firing a weapon requires a certain need for deadly force. Purposely shooting someone in the leg pretty much shows that standard was not met.
Second, there is another reason everyone (including cops) are trained to shoot center mass. It is the easiest target to hit in a split second life or death situation. When your life, or the life of others, is on the line, you shoot that easy target and keep firing until the threat is down and no longer a threat.
Tasers are not used to protect the cop. Tasers are used to protect the person being arrested. Generally speaking, it is better to be tased when you are resisting arrest than to have the shit beat out of you. I would much rather take a blast of spray or get tased than be beaten with fists and a stick. You would, too.
Officers should only pull their gun in certain situations (other than the obvious when they immediately shoot a threat). Certain high risk traffic stops, when executing a high-risk warrant and searching that property, blindly entering a potentially dangerous situation (think entering a building in which a B&E may be in progress). A suspect will not show their hands, hands in pocket or reaching under a car seat. You get the idea. I have ZERO problem with this officer drawing his handgun when faced with a suspect who is giving every indication he is going to drive off. That is a quickly escalating situation in which the officer may be ran over or dragged, nearby drivers and pedestrians may be struck, etc. There is a decent likelihood deadly force may immediately be needed.
Why did he shoot? Hell if I know. Herdman may very well be right...the cop was jacked on adrenaline, his finger was on the trigger, and something went very wrong. That is not an excuse. That is a good description of manslaughter in this case. Murder? That is a stretch, IMHO.
All that said, one thing stays constant....if you STFU and do as the officer says there is a 99.999999% chance you will not be beaten, sprayed, tased, or shot. It really is that simple. Blacks like to ignore this truth because it spotlights an issue in the black community: a complete lack of respect for authority and social norms has spread like wildfire in that community. Dude made a bad decision and ended up dead. Should he be dead? No. But he started the chain of events that put his ass in a casket.