So..
No dogs, they poo, they run about, they are noisy, they can cause injury and spread parasites and disease, correct?
No children, they poo, run around, are noisy, can cause injury and spread parasites and disease.
No joggers, those are also running about, can cause injury, spread disease and parasites and I have also known them to poo in the woods.
No wildlife - that also pees and poos and can cause injury, disease and parasitic spread.
No teenagers - can cause injury, spread dangerous broken glass and waste around, poo in the woods/long grass.
Who else shall we eliminate from these public spaces to keep them nice and quiet and completely safe from everyone?