[Sixer]

If the "stranger" looks like he is literally getting beaten to death... I'm stepping in to try and break up the beating.

I would NOT introduce a firearm into the situation.

Of course you are putting yourself at risk by taking any non-passive actions. I just can't stand to see these or similar situations end badly for a truely innocent victim while people casually walk by and turn a blind eye.

I see this garbage on the news all the time... someone is getting beaten within inches of their life and all the while people are passing by with their heads to the ground.

I know that innocence can't be assumed... but by stepping in and at least attempting to break up the situation, you are really helping out both parties.

A) The "stranger" may actually get to see another sun rise.

B) The person dishing out the beat down may not get charged for murdering someone in public