My local skatepark is in the same park where all the prostitute from the city hang out. And I mean 50 yrs old meth head hoes.
I've seen some crazy and nasty shit happen there. Coming at the park at 2h pm and seeing a girl blowing a crackhead is pretty common.
Twice during a session a girl came and start shitting on the main curb. (it was the same girl). Once she start throwing her own shit at people.
The most famous story of our city, and I was there, two prostitute start fighting with their belt, like slapping the hell of each other until their pimp came and start beating the weak one. Then he took a knife out and start to scream at all the skaters watching this madness. My friend had enough and knock him out with his board. About 10min later the pimp woke up, took back his knife and went at my friend screaming, so my friend knock him out a second time with his fist and thrown the knife away. And it's not done...here the funny part.
The pimp went beside the corner store, pack a puff of crack, smoke it, look himself in the window, see his bloody nose and then came back running throwing punch in the air. My friend punch him, he fall, go back to the cornerstore, puff, look himself in the window, see his face and came back again! 4 fucking time he did this. At the end someone had to call the cops cuz the guy keep coming back. The next week we saw the pimp at the park and he didn't remember any of this shit
(sorry for my english writing i'm a french guy)
But beside that there a trend with stupid scooter kid : they come in the park, take a picture of the scooter on a ramp or curb, then leave. Have you see this shit too ?