They are dogs and need to be treated with respect. As far as I can see if they are in a place heavily populated then they need to be under constant control.

As for breeding traits out, it may work for a majority of animals, but the traits will never be removed completely. Look at any cattle property that culls on temprement. Its a job that never ends. Even quiet cattle can throw cranky calves.

There are no doubt a lot of dogs bred by people that have no idea and taint it for everyone else.

I dont care what anyone says, any dog is potentially dangerous to a toddler.