I mean in reality hard to imagine what I would do but i can not stand by and let anyone get beat to death.
Big Dilemma on what to do.
I guess look for a backstop and fire one round is the best option i herd, because a fired round in to the air is reckless.
Only backstop i can think of that is everywhere in a city is a drain on side of the street.
Situations move fast and sometimes you do not have time to think and just react, and hopefully Training kicks in and you do not hurt a bystander.
The general Population who have firearms do not train or have not been trained properly and will not think of these scenarios you are thinking of and foresight is not something we are blessed with in an emergency situation and it is just our best guess, so train for scenarios and hope for the best.
BTW i will now train myself for this very Scenario.
IF I found myself in such a situation, and IF I decided to act - I'm not sure I'd want to waste ammo by sending it down the drain.