I don't agree with banning dog breeds, yes dogs are bred for specific purposes but with training a lot of the behaviours can be controlled, even collies can have their herding instincts redirected onto something else

There's a petition over the whole "ban all bully breed type dogs"

its on the parlaiment uk site, bbc explains whats happened

American bully XL owners speak of heartbreak at ban - BBC News

What is an American bully XL and why are they being banned? - BBC News

and

American bully XLs will not be culled under ban, says chief vet - BBC News

(the government don't give a rats behind over petitions that are not through their own site, so sites like change, etc, they ignore)

it just gets to me cause where will it end, we don't ban a nationality of people in this country just based on what they might do, so why are we doing it to dogs?

All banning anything - dog or not - achieves is it drives the behaviour underground and makes it more dangerous for everyone.