There’s a big difference here, between being a good witness and being the victim in danger of serious bodily harm if not death. All witnesses in this case were safely ensconced in their nearby homes.
If Z had stayed in the car, he would have remained no more than a witness.
“Be a good witness” means to stay out of the action and be a witness. It does not mean engage, follow or do anything that causes involvement.
Z is the perfect example of what can happen to persons who try to play cop.
Trevon (AKA President's racist son) is the perfect example of a N$#%R racist thug who tried to play bad A$$. It demonstrated good gun control. May any racist thug get similar results if he attacks me (or any armed citizen). If he attacks an unarmed citizen, even you, may he also need a funeral when a concerned citizen like myself shows him what decent people do to scum who prey on others when it is necessary.
Obama is the perfect racist like Jesse Jackson who tried to incite race riots in response to someone killing an attacker in self defense.
Have YOU figured out why Obama is purposely trying to destroy America economically, socially, militarily etc. OR are you still stuck on is Obama a socialist? OR have you already explained the fake SSN the fraud has been using?