TJ,
You see things as very black and white in your eyes only. Any dog doing anything which pisses you off then the owner should be prosecuted. That is in your opinion only.
Lets be clear.
If a dog is off leash and runs up to someone and takes a massive chunk out of their leg then yes, you are right and i think everyone is in agreement. The owner is liable, should be prosecuted etc etc.
If a dog is off leash and runs up to another dog wagging its tail to say hello but because the owner of that dog (and lets be kind) is a complete ****wit and wants nothing more than to turn their pet rat into a quivering wreck of an anti-social dog by picking it up out of harms way then my friend i would fail to see how that is illegal?
Edit:
however you prefer to ignore the law to justify your inability or unwillingness to control your dog
– Again another TJ prejudiced assumption, my dog is under perfect control at all times.