Bilbao to Barcelona

The north of spain, from the train it's a journey full of color as the graffiti flashes by along the route. Some artists paint while others spray their stories on walls and fences. Most of it must have taken many hours, so this means that the locals have allowed the art. What a great idea! Artists actually allowed to say what they think?
The stories painted on buildings speak in the universal language and it's not to hard to get the real meaning. Same goes on here as in america, poor getting poorer and rich just don't care.
However, in the west/south as you get to Barcelona there is a completely different type of art along the way. It's radical, loosely placed and looks as though it's not legally allowed. Either that or the artists are not as inspired as in the north. Must be some heavy drugs involved, because the art is more violent as it yells out at you even when you try to turn away.