Park Police in the state parks within the "Battery" area of Manhattan are now enforcing a "No Parkour" rule, punishable by a 300$ fine. Practitioners have been training here, and all over the city, for nearly a decade now, and have had virtually zero reports of vandalism, property damage, or anti-social behavior. Putting a ban on something these people love is both unfair to them, and borederline unconstitutional, as these practitioners (quite successfully) make it a point to disturb no one, and preserve and respect the surroundings they train on and in via their "Leave No Trace" philosophy. These people aren't hurting anyone or anything, and should be allowed to continue doing so freely. These kids don't want to just go home and play video games, and you shouldn't ask them to.