When my daughter was about 4 these three chavs were walking through the local park with a dog. Dog did a big turd right near where I was standing, so as they walk by I was looking at them, saying nothing, but clearly implying 'gonna clear that up?' They just walk on like these sub-human scum tend to do (no interest in taking responsibility for anything but the first to complain and go for compo when anyone infringes their tiny little lives).
Would have ended there (not the fighting type) when of course my daughter runs up to me to tell me something and goes straight through it and lands on it. Red mist. The three had taken up position on a park bench by then so I get a big stick, take her shoe off and proceed to start flicking what I can off the shoe and onto their backs. One of them goes ape, but the other two don't look interested. Would have been an interesting one - they were all about 18 so it was three on one with a 35 yr old guy but I think they saw how angry I was. There's something about feeling your kids have been violated/threayened. The brave one said I was only being hard cos I had a stick. I calmly bent down, gave it to the offending canine, gave the dog a big bit of love and attention and strode towards the chav.
He backed down and left the scene.