"To answer the question “How can a city control its Street Art?” Let’s look at an analogy in a different field: wildfires. In wild areas in Spain, the government adopts a zero-tolerance policy. However, the forest ecosystem depends on fires for its well-being. To attempt to suppress forest fires allows vegetation to grow unchecked, so in the dry summer months, the smallest ground fires can quickly spread to the canopy, where it becomes an unstoppable inferno. The right policy is to provoke controlled fires which allows for appropriate stratification, that is, layering of the woods so that a ground fire stays a ground fire. If a zero-tolerance policy is adopted towards Street Art, undeveloped tagging will go on the increase. Professional artists will move to other countries. Unrest, especially among the budding Street artists, will grow."