What you are failing to take into consideration is that the demographic that keep a pit or rot mix as a non-socialized and aggressive guard dog over represents

What you are failing to take into consideration is that the demographic that keep a pit or rot mix as a non-socialized and aggressive guard dog over represents the breed as a whole. Yes, a pit bull has a greater chance of inflicting serious harm if they attack, most of the ones that attack are the millions locked in a yard by your neighborhood drug dealer. I just read through a couple reports, they include wonderful stories like the pit bull who knocked over an old lady and broke her hip as an attack. Edit: To make an anecdotal, worthless point...I live in a really poor area of Portland. I walk through the neighborhood and on just about every block there is one house with a locked up pit bull behind a 4 foot chain link fence. These dogs are aggressive, abused and very well represent a danger to people.