at end of day a trained dangerous dog like a rotty or pitbull or similar you arnt stopping until its dead.
doesnt matter if you twenty stone a rotty would take you straight down.
if the coppers were injured or even take the coppers out of it you would kill the dog to save lives or injuries. simples.
Rottweilers _can_ be intimidated into backing down most pitbull breeds don't know the meaning of being intimidated.