Well now, this happened to me in south omaha one time. I intervined, no carry weapon on me cause it wasnt allowed in them days.
At 350 lbs this guy is smaller than me. FYI.
Another note, a gal and guy were getting into it in the bar. I get between em and ask them to take it somewhere else, that gal hit me with her purse hard upon my head the guy tried but my backup caught his arm and almost tore it off the guy. So in this situation if anyone got at the guy that gal would leap on him too. Be carefull, you may get hurt.
Best to call 911 now we have cell phones first, then act if you can. Many folks will hesitate to take on a huge man and that is OK too.