Maromero ~
Yes, you do. Based on intelligent assessment of the situation, including body language and other cues that may not appear in the police reports later.
And yet people are willing to read a bare-bones newspaper account -- which definitely will not include all the relevant facts, and which probably will have some of the included facts outright wrong or at least distorted beyond usefulness -- and use that account to say the guy on the scene absolutely made the WRONG CALL (or absolutely made the RIGHT CALL). Either way, it's not realistic.
A realistic understanding of these types of situations includes the knowledge that they are dynamic: they happen quickly, they change quickly, and they are over quickly. Note the word "change." Change one teeny tiny detail -- a detail that probably won't be in the news reports, and may not even be accurate if it is, and which may be so small as to not even have been noticed by other, untrained people on the scene! -- and you've shifted from a situation where you definitely should shoot to one where you definitely should not. Or vice versa.
But the lines are already drawn here. Some participants in this thread are ready to sneer (in a refined, academic way) at anyone who would shoot. Others are fixing to impugn the manhood and ethics of anyone who would not shoot.
Me? For me, the only reason I'd ever shoot someone was if I believed an innocent person was going to die if I did not act immediately and decisively. Money in the drawer, money in my wallet, car keys, my wedding ring -- none of those are reason enough. But protecting my own life most certainly is. So if the situation appeared to warrant it, I'd have shot to defend my life and the lives of other innocents in the area. But I probably wouldn't have vocalized before firing, in this type of situation. If I'd vocalized at all, it would have been to command "DROP THAT WEAPON!" -- giving the criminal an opportunity to save his own life if at all possible -- but only if I could do so from behind cover or good concealment. If I were in the open, I probably would not have vocalized, since the only reason I'd have my firearm out in the first place was if I believed lives were in immediate and truly immenent danger, and given true imminency, an in-the-open vocalization would be foolhardy in the extreme.
(There. That should be enough to get both sides irritated with me. So be it.)
pax