Check out this video (approx. 15 mins. also seen on Wooster Collective) that the Ztohoven put together for their "city lights" campaign. The translation is terrible, but whatever.
Ztohoven - Znásilněné Podvědomí from Míra Sláva on Vimeo
The amount of ground they covered is impressive. I wonder if they were eventually sued. But then again, it's the Czech Republic, not America.