Walls are one of the main problems in our cities. The ultimate physical manifestation of division, they strip away the sense of community on our streets, turning a walk down the sidewalk into an empty, monotonous, and insecure experience. "Eyes on the street" are essential for urban life, particularly in a society as violent as Brazil's.
Why do our cities have so many walls? The real estate sector is usually blamed—the perpetual villain for those who confuse cause and effect. In reality, however, even older homes rely on them.
