Dang, that kind of talk indicates a truly mythical misunderstanding of the real street, at least one without guns, as is the case in normal places. As an ex-bartender in a port city, with the scars to prove it, I can say that guns would never, ever have improved any situation I experienced, and they were far "harrier" than a simple push and shove match.
This logic, applied to the prior case, would justify killing the perp outright in the parking lot, without first shoving him to the ground, as he was a clear and present danger to a loved one: self-defense. Yet now, you are with the perp. Make up your mind. Oh, forgot, the alt-right is dedicated to dishing it out, but cannot take it for a nanosecond. How brave. Anything for a manhood substitute with bullets.