They are domesticated great white sharks that sometimes degenerate to a feral state.
If you think this is no a dangerous matter, consider letting your children swim among them.
Loose dogs of any type/breed are unacceptable.
I wish you success in your approach to the problem.
I also hope you gain freedom from your hyperbolic notion
that “pit bulls” are ‘domesticated great white sharks’.
It makes you appear silly and incapable of serious discussion.