Maltese Love, I'm sorry they said that to you. That was very rude and uncalled for. I can't believe some people these days. I'm sure they were just trying to get a laugh or something (not saying that's funny, but they probably thought it was) I din't think they actually have parents that dog fight, but it's possible.
Like Karen said, if you ever see them again maybe you should contact the police. At least maybe they would talk to them and scare them a little.

Again I'm sorry they said that about your little dog. What kind is she? Give her a hug for me, will ya?

Genny