This year's theme is "Pulsioni Sotterranee," which means "underground drives" or "desires." A "pulsione" is that which pushes you to do something.
Today's photos show some of the artists in action. I have to go back today to photograph the completed works.
The artists featured here are (from top to bottom): Pino, Pokè, Miste and Gigi. Some of them were willing to be identified by the name they sign their work with and others preferred to use their actual name. There are legal issues for them to consider, since their creative efforts are considered vandalism in certain cases.