Most dog owners follow the rules but there is a small cadre of regulars who don’t. These people are aware of the rules (I know because I’ve sometimes reminded them of their existence) but choose to ignore them.
Now, who cares, right? What does it matter if some people choose not to follow this nanny-state rule?
Well, here’s what: once or twice a month we’re forced to end our walk early when someone has an unruly dog off leash in the direction that we’re walking. We’ve spoken to others who have had the same experience.
The park has a children’s playground and multiple sports fields. Many of the regular users are elderly and they choose this park because the path is paved and level. Not everyone appreciates being approached by an off leash dog.
So the off leash dog owners either don’t care about or don’t comprehend the effect of their actions on the rest of the community. This is a minor example of a lack of duty contributing to a “tragedy of the commons”
waits for American to suggest shooting the shopping trolley to solve the problem
You should not be ashamed to get rid of an animal that threatenes people.
Not only are you asking someone to literally kill an animal, something many people are de-facto not going to be comfortable with, you're knowingly recommending something I'm almost certain you know deep down isn't reasonable because it'd be a heinous overreaction, and it'd result in a mountain of paperwork and legal troubles for the commenter you replied to.
Ridiculous.
Some sense of duty along the lines of “I’ll follow the rules in the park even if it inconveniences me” seems to be missing.
I'd bet on some combination of the above like "nobody has even made a complaint in 20 years because 'everybody knows' such complaints are ignored, but the Good Old Boys responsible for stonewalling back then have since retired".
Filling potholes, OTOH, is a much higher cost thing to do, and so people are more likely to feel that the city should be using the money they have already paid in taxes to do it. (Another aspect is probably also legal risk--if I decide to fill a pothole and do it wrong and someone suffers damage to their car, I might get sued. The city has many ways of mitigating that risk that I, as an individual, do not.)