The percentage of dog attacks by bull terrier type dogs for instance, the number of deaths by pit bulls in the US, the number of injuries by the same breed
In isolation, those statistics mean very little. If, say 15% dogs owned are bull terrier types (however you define that) and 10% of attacks are by them, they are actually safer than average. Shrieking "10% of all attacks are by bull terrier types" in isolation doesn't give you a meaningful figure. Likewise, just quoting the number of deaths. Any death is horrific but breed is not a predictor unless those breeds are disproportionally represented.
Any normal human with a degree of empathy would find these attacks horrific and would want to reduce them, preferably stop them. We could ban all dogs but the outcry would be such as to make this impossible. They're used by the police and army for crowd control; bomb detection; drug detection and rescue work at disaster sites. They are working animals on farms. They're used as guide dogs for the hearing and sight impaired. They can warn of impending epileptic fits and sniff out cancers. They help people on the autistic spectrum and can be used for therapy - that's before you even start on the day to day benefits of pet ownership.
So you're then left with a root cause analysis to try to control factors that tend to provoke attacks. As has been explained repeatedly, breed is not much of an indicator. It's no good saying "but look at press reports, most of the time it's staffies" for the reasons given above, ad nauseum. Generally what works is education. Which is not to blame anyone given some of the horrendous accounts on this thread. But if you go on You Tube sadly there are plenty of videos posted by people saying "look at the cute dog playing with the baby, aren't they having fun". Yet it's obvious to anyone with a bit of knowledge of canine body language that the dogs in these are very stressed.
This isn't a competition to see who can do the best sad face, or who has the most compassion or is most upset. Sometimes, in emotional situations, you actually have to make a logical analysis to prevent these horrific incidents recurring. Banning particular breeds does not reduce attacks so we need to do something else.