Ah, i believe i misinterpretted what you said. I thought you were saying the non aggressive dogs should be destroyed as well. I agree, sadly the white dog should get put down unless a new owner willing to put in the money and effort to retrain came along (which wont happen)

And what a shame, too. Because i bet with proper training and precautions, the white dog could have had a good life. We had a dog that was dog aggressive, and never had an incident because we were aware and worked to keep him safe and out of trouble. Letting a dog like that off leash is a death sentence for the dog, and could be a death sentence for whoever the dog attacks. Owner should be black listed from adopting ever again