Women, would you be angry with your Husband/BF for this?

We were at a community event with our children. Two big boys (like 17 and 18) were beginning a fight. A girls stepped between them and nearly got hit. Probably didn't help with all the cursing she was doing....but, I digress. I saw this at a distance. And the boys started to move through a crowd, and I could just see this getting out of control. Where innocent small children/senior citizens could get knocked down/hurt. I'm a big fella, and can handle myself. I came up behind them and bellowed (I say bellow, because my great grandfather sang oper in italy and here in the states, so I can bellow),"Knock it off" I said something else to the effect that it was a comm/family event, don't be stupid. I sent them different dircetions. She turned on me like I was hitler. "Did you even consider your son?" that was her first question. I didn't get. Anyway she says I'm an embarrasment. and that I'm all "Show". I think I've pretty much been a deliver guy all these years.