Don't Do Drugs! Jump From Rooftops!
As Pete Guither points out, it's all just a sad attempt by the Drug Czar's office to associate their messaging with something cool, and it's true that parkour is A) hip, and B) not drugs. But that's about as far as this idea gets before literally landing flat on its face. You see, parkour is, well, let's just say it's not a very good way for young people to avoid injuring themselves.