Political correctness and the skateboarding/bicycling examples are apples and oranges.

I do part time security work and we don't allow skateboarding/skating on property. "Trick" bikeriding is also not allowed. All because some parent decided that somehow the mall is responsible if the child "eats it".

There is also a small element among the skateboarding community that would involve people's cars in their tricks causing damage to the vehicles.

We tell them the rules, if they see fit to break them we bar/ban them from the mall indefinitely.