I've almost gotten arrested so many times by park police when i'm shooting skateboarding or skateboarding. The only reason i haven't is because i just run.
there's the rub... skateboarding. The park police hate skateboarders because many boarding maneuvers are incredibly destructive to the monuments, steps, and railings. Also, a mis-step on the part of a skater on a flight of marble stairs can end in a trip to the ER, a new permanent four-wheel conveyance, and a lawsuit against the park service.