OK Unruly, let me get this straight. You're saying TM knew GZ was following him, asked GZ to stop following him, GZ didn't, so TM jumped GZ. At this point GZ has the right to pull out his gun and shoot TM because he is being attacked. TM stood his ground against a man following him because he felt threatened, but because TM stood his ground with his fists, that gives GZ the right to stand his ground with a gun?
If it's within your legal rights to provoke someone to protect themselves (while knowing you are carrying a gun) and then shoot them because of their reaction to you stalking them, then the law is mumped up.