I agree with you on that front Stuart. It is their intent to use them in a threatening manner and they teach them that behaviour. When my friend walks with his family and the dogs at the weekend the dogs are totally docile unless he really shouts at someone and he does not do this. It comes down to intent, there should be an instant asbo option for animals like there is for humans (and it should apply to the owner as well if they are leading the animals badly.)
