every time you hear of a dog mauling death in the news.... it's a staffy?
No it's not - it is, as Cesare and GuBrath say, a combination of ignorant reporting and uncaring owners.
And as Kali says - not long ago it was the rottweiler that was evil incarnate; prior to that the german shepherd and the dobermans had their turn; now huskies and malamutes seem to be getting in on the act, as are american bulldogs and "pitbulls". The only dogs that have ever frightened me have been akitas - massively powerful and very difficult to read.
I have seen adverts for some Eastern European breeds that I don't really think should be kept because they are NOT pets e.g. Caucasian Ovcharkas. These dogs were bred to pretty much live as feral animals protecting a herd from wolves and bears. They powerful, highly intelligent, independent and do not bond well with people - you really need to know what you are doing to have one of these dogs safely, but you can bet your bottom dollar that some idiot will get one to look the Big I Am and will abuse/ neglect it and there will be a tragedy.
Staffs are the dog of choice by thugs because
a) they are fiercely loyal to their owner - good protection against rival gangs and police
b) they will take a lot of abuse without turning on the owner - the tossers can treat them badly, underfeed and beat them and they won't turn
c) they look fearsome - as makes whoever is with them look tough
d) can be used for dog fighting - many breeds can, but these are pretty small and cheap to keep
e) usually have large litters - money in the bank to some people
They are a good breed ruined, most of the time.