I recently stumbled upon Pixel y Dixel, and while my Spanish (Portuguese?) may be rusty, the above picture required no words to understand. The work of street artists working under the name 6emia, this is a drain cover in Sao Paulo that has been beutified. This image strikes me as a pretty great commentary on dirty streets, trash, and smoking. There are other pieces in their gallery that are more artistic and less political/activist, so if you like this one, go see the rest.