One time at a park in a suburb, a kid about 6-7 years younger than me kept laughing menacingly when I would fall on some warm-up trick and would come over to tell me I sucked. After about the 4th blatant neg comment, I lovingly focused his board, then I left as the kid started crying. The next day I went on a 2 week trip with my homies to skate San Francisco, and after I came back the locals of said park were telling me the local police were looking for me for stomping that shithead's deck so I stopped going to that park.
It felt cringe at the time, but I have no regrets.
Regarding boardslides on ledges, you should go to skate jail. Shame on you.