Yes, and I have. Sometimes after intervening it was clear both parties wanted to fight, so whatever, I left them to it. Once however I saw some women get into a crazy fight on the street, and they both then had 10 year old or sons that started beating up on each other. I separated the kids until the cops came. If grown people want to be stupid they can, but kids shouldn't get hurt because of their parents. (It was a pretty crazy sight; I have no idea what the fight was about.)
Have you ever been to a bull fight? I have. I was very young and I had no idea what a bull fight was. I hope I am not offending anyone when I say it was awful.