Even if you've never heard about a dog fight, that doesn't mean they're not happening nearby. We also can't relax simply because animal fighting is illegal. I've witnessed enough horrific crime scenes to know that animal fights can take place anywhere, and that they represent the absolute worst of human nature.
I was a police canine handler for 8 years. My dog Bach was as gentle as a puppy unless he was provoked or he detected a threat against me. I had absolutely no problem bringing him into preschools and letting the children pet him and play with him. He was a part of our family, and with 4 sons, the house was always full of kids.