well, if you built a house, paid for it's paintings and the painter, then someone, with a certain talent, ruines your wall?! what do you think ruining others property is legal ??? WTF people WAKE UP, it's an animal and it's like a sport, and YES it should be illegal, but these king of drawings,are illegal too! if you want to draw, you've got your room, papers...
I'm from Spain and this is totally embarrassing... At least in the region I live in now it's banned, but not in the rest of the country. It's only banned in 2 out of 17 regions of Spain... we gotta make a change!