what a revolt'n development this is!
I read the post differently than some of you.
It seems timothy75 is stating that the agressor is intent on a violent confrontation, no matter what you do, and to complicate matters, he has not produced a weapon that would justify you using comprable force to defend youself.
I did'nt read this as a "calling you out" type of situation as Mr. White presumes, but rather, as an assault, preliminary to injuries by what appears to be someone unarmed.
Am I reading this wrong "timothy75"?
I have been in a situation where my initial attempt at descalation by backing down and removing myself only encouraged the attacker who percieved such action to be a sign of weakness and actually spurred him on!
I also have seen instances where because of chemical influence, the agressor -when confronted by a drawn weapon, will recklessly defy the defender. "Go ahead and shoot me, he will shout, and move in on you, knowing that he, by all appearances, has not justified you using deadly force.
What a predicament.
"timothy-", I would place something between myself and this guy so that he would have to strike at distance or reach and grab; so that the witnesses to his relentless agression would know that I was clearly and desperately trying to avoid contact. I would clearly and loudly state that I wanted to leave and go away. If he would still be intent on attacking you, it will become evident to all onlookers that he has the criminal frame of mind. My supposition is that he presses on with his assault, exposing you to be vunerable to battery next.
He will close with you to strike at you, grab hold of you, or rush upon you.
Should he grab; I would make sure by grasp defeating technique that is common knowledge within many martial arts, that he could not drag me down or around nor control me, and finally would gain distance from him with a chair or whatever was handy so that when he made an additional attempt on me that I would then have established in public view that I was not the agressor and that I had already avoided violence, and that this attacker had indeed acted to give me a reasonable conclusion that I was in danger of serious bodily injury or more. You must avoid his manuevering to entrap you.
From there on, producing a firearm would be your decision, based on your judgement.