Well, that "cta worker" left his bag of paint in one of the photos. If a cta worker was a graffiti enthusiast, we would see much more than 2 wyses pop up on the internet. No one but an ignorant fool trying to cover up the fact that he wanted his panels posted on teh internet would believe that
Comparing any country to any other country is ludicrous, the mentalities are different, the systems are different, the drive to paint is different. So just stop