Under the terms of my carry license, I can't go into a bar armed.

And I can't drink alcohol at all when armed.

So this wouldn't have happened to me.

If I wasn't there when the fight started, or paying attention, I wouldn't know who the aggressor was. Could be the guy getting the stuffing kicked out of him.

I'd get the heck out, call the cops and let them deal with it.

That's what I pay taxes for.