One of the things that I picked up on the South American trip is that there is a huge amount of grafitti around. Specially in Sau Paulo it is on everything. On some buildings you stand in awe and try to figure out how it got on walls several floors up from the ground. Grafitti is such an problem that most of the statues and monuments are fenced off with wooden fencing to stop people from drawing grafitti on them.
This was thr first grafitti I saw up close. It was just next to the hotel in Sao Paulo. It looked very informal.