Any PERSON should follow around anyone who they deem suspicious. Why are you emphasizing ARMED? If they are licensed to carry a weapon then the fact they are ARMED has nothing to do with anything.
If any person is so inclined to follow around a suspicious person then they should do it since it is not unlawful. Whether they have a weapon or not is completely, totally, indisputably irrelevant...except for the fact that they would be better able to protect themselves if they are attacked if they are armed.
What's your point, anyway?
If someone is a black belt, they are held to a higher standard. What's the difference between that and being armed with a gun?
I believe everyone should be held to the highest standard. What do you mean?
People should be judicious in their use of force. Is that what you're getting at? Yes. I agree. That holds true in all aspects of life. You can take this as far as you'd like.
The fact remains that GZ was assaulted by TM and the jury confirmed his contention that he was in fear for his life or great bodily harm. (The worst outcome would have been GZ losing control of his weapon but that is another discussion altogether.)
But you keep going back to your belief that somehow GZ acted unreasonably and that's where we disagree. You harp on the fact that he had a gun. So what?
When you ask if he should be held to the highest standard I agree. I do not see where you feel he diverged from that standard. Fear of loss of life or of great bodily harm is there. He has a lawful firearm. Where do you think he went wrong?
He was obviously attacked. The evidence and testimony proved that. So what now?