This will not stop unless owners put in the time and effort to train their dogs. Judging from the article the dog was kept in a small area, it must have been so frustrated. These dogs are powerful they need a lot of exercise and space. These dogs are born innocent and now they are being put to sleep because their owners cannot or will not put in the time, shame on them. I watched an interview with an owner in the US, her dog sired a lot of the dogs that were sent to the UK. Her dogs were magnificent, so gentle, it is all in the way the dog is handled and training has to start from day one.
What happens when another breed of dog kills a person , will that breed then be euthanized, where does it stop?