I think that the dogs that killed that baby in Ystrad Mynach (a while back now) were a jack russell and a staffy.
..........these dogs are not born monsters (even though they might look scary to you) who want to rip your throat out. You and others are being a bit soft.
If these dogs are properly socialised from a young age around kids, adults and other dogs, I think they would be as likely to randomly attack someone as any other dog.
Breed them out , fine. Put them down ....you can't just go to someone's house and say ...."ye, I'm gonna have to kill your dog".
You can however fine people if they have a big dog like this that is not wearing a muzzle ...for example.