I agree with your point about people leaving their dogs' mess, but I can't say it's something a lot of people around here do,
I love my cats, but we don't kick them out at night. They have cat flaps and are free to come and go, day or night. There's are loads of cats on my street, though, so no one has ever had a problem.
My next door neighbour's dogs get on my wick when they bark and so do the kids in the park behind my house, but then we were all kids at some point- don't tell me you never made a racket!
Oh, I do wonder, though, what are you supposed to do when you're bitten by someone's dog when you're in the park? My brother was on his bike, as were his friends, a couple of weeks back and a dog ran to him and bit through his trousers into his leg. He's been left with a massive scar. The woman who owned the dog couldn't apologise enough, but he, nor his friends, recognised her as a local, so there was nothing they could do. :(