It seems that there is a huge sense of entitlement amongst a lot of people, adults and children alike. There's no respect for property or personal space either. Challenge 'the entitled individuals' at your peril; you either get a mouth full of abuse. or worse still, physically attacked.
I don't like random dogs jumping at me and voiced my concern some time ago when a dog on an extending lead - another pet hate of mine - jumped up me with very dirty paws almost knocking me over and soiling my clothes. I asked the owner to control the dog and retract the lead to which she replied "shut your f******g mouth, its a support dog and I can do what I f*****g like"!
As I said, challenge at your peril.