The world is increasingly more divided, and often these psychological and political barriers have physically manifested into walls—a damaging and dangerous symbol with humans on either side. Directors Pablo Iraburu and Migueltxo Molina explore four such walls—between the U.S. and Mexico, Spain and Morocco on the island of Melilla, Israel and Palastine, and South Africa and Zimbabwe—and their monumental impact. Beautifully shot and emotionally stirring, Walls proves that the fall of the Berlin Wall proves to be an anomaly in our brave new world of barricades and fences.