I used to walk in a park every night at around midnight, in a big city with tons of police gang units. Not once was I ever approached by anyone. It was peaceful

I used to walk in a park every night at around midnight, in a big city with tons of police gang units. Not once was I ever approached by anyone. It was peaceful every time, without exception. That changed when the police started driving their massive SUVs on the park path after 11pm to make sure nobody was in the park. The first time they did it, they argued that the park was closed, though there were no signs saying the park was closed. It turned into a big verbal argument but thankfully it didn't escalate badly. That night I looked up the city code and found that if there's no gate, then the law allows me to walk to the end of the park. I went to the police station to complain, and was told that I shouldn't worry about it because they're not trying to get "people like me". But still, it happened again, and the cop basically told me "we're going to keep doing this until you stop". So, while the cop wasn't exactly disrespectful, he was wrong about the law in a way that manifested no differently from persistent harassment. They're just trolling for anything illegal on a default position of wronghood. You're asking the wrong questions.