Ronald Rael and Virginia San Fratello have long worked in activating structures in projects that blur the line between art and architecture. The Oakland-based duo, who self-describe as pursuing “applied architectural research”, also have a longstanding interest in the United States-Mexico border wall. In 2009 Rael wrote Borderwall as Architecture, which features a conceptual drawing of a teetertotter. The concept relocates the classic playground equipment to the border wall as its fulcrum. More