It would depend on the situation I suppose.
I once seen a group of 3 guys shouting at and trying to start a fight with a random guy in Aberdeen, me and the 2 guys I was with decided if they started on him we would go over. So the biggest guy takes a swing first and by the time we looked at each other and started to walk over, the guy on his own had the 3 of them on the ground and was walking away as though nothing happened . . . so glad I didn't go over . . . he might of taken me out too! haha