Slovenian Street Art

I like street art, and since walking in numerous cities with one of my sons, I also notice it. I did not know anything about the street art of the Balkans, but discovered that it is alive and well in Slovenia--every town we were in had at least one, and after coming home, I discovered a Facebook page devoted to Slovenian street art:
http://www.facebook.com/pages/Street-ART-Slovenia/111110808968876?sk=wall

Ljubljana is a college town--we were there on the first day of the semester, and the streets were teeming with college-aged youth. It is also the home to the most sophisticated street artists in Slovenia. The Fat Cap website has some spectacular examples of what can be found if one looks: http://www.fatcap.com/country/slovenia.html
One message that street art communicates to me is that this is not a totalitarian society. It is also a culture of people with something to express that isn't limited to traditional artistic outlets. It tends to make me want to get to know a place better. What kind of people are these?

So, in the end, what is street art all about?
There is a strong current of activism and subversion in urban art. Street art can be a powerful platform for reaching the public. Perhaps street artists simply see urban space as an untapped format for personal artwork, while others may appreciate the challenges and risks that are associated with installing illicit artwork in public places. However the universal theme in most, if not all street art, is that adapting visual artwork into a format which utilizes public space, allows artists who may otherwise feel disenfranchised, to reach a much broader audience than traditional artwork and galleries normally allow. Street art was not mentioned in any of my guidebooks, but I would love to see a 'guide' to it in Slovenia.