David Langley- Skateboarding

David langley's argument is settled around the unjust treatment and judgment that skateboarders have to face on a regular bases.  Langley feels that as a skateboarder his is judged with stereotypical notions, and treated unfairly when it comes to where and when he can skate.  He uses many different pieces of evidence and claims to help him support his argument.  

The first main piece of evidence he uses is one of his won experience.  A time when a police officer grabbed him and gave him a warning for skating in public even though David was sure he didn't violate any laws.  He stated that it was unfair that there are so many laws that forbid skateboarding in public areas because he feels that skating is a form of transportation.  Such as bikes, cars, or even a simple means of entertainment like a surfboard. He also gives the point that as a skate boarder he is actually helping the environment by keeping the air clean and picking up trash in order to not run over it while skating.  Even though David has good evidence for his claims, he still leaves me to question why there are these laws in the first place.  He gives me no good reasons as to why there would be an established law against skateboarding, yet there isn't one against biking.  It makes me wonder about the other side of the story.