The reporting around some of these news stories is frequently sensationalist and does not give the full story.
I frequently have to ask the parents of kids for them not to just run up to my dog and start mithering him – he is a very gentle dog, and has never bitten or even growled at anybody, but I don’t know if he might – if he is irritated, too hot, feels threatened etc, and I get terribly nervous if children surround him, because I know it would be my fault if he attacked.
Parents should teach their kids to ask an owner before they come and pet a dog, or that the parents should ask. If I see small children when I’m out, I put him on a lead. I have previously had to actually physically remove a child who was pulling my dog’s fur and would not stop when asked (former partner’s friend’s kid) and got an earful from the mother, I asked if she would rather risk her kid getting bitten by a Rottweiler, and she shut up rather quickly. Of course, these news stories rarely report that Little Johnny/Jenny might have done something to provoke a dog, or that idiot parents let their kids go up to dogs they don’t know and stick their hands out right in front of their mouths.
As a responsible dog owner, it is always a worry that your dog might do something unpredictable, but it is also always a worry that people might do something unpredictable around your dog, and it will be your fault. Most dog owners try their best to avoid it, but the minority idiots give us a bad name.