Complexo da Mare, a massive network of favelas that sits alongside the Linha Vermelha ( Red Line ), the main highway from the Rio de Janeiro international airport to the city centre - since 2010 the community has been fenced off from the highway by huge Perspex panels - authorities claim they provide an acoustic barrier, locals describe it as a “wall of shame”, another way of hiding poor people. Just before the Olympic Games the city began plastering the 3-metre-high, 7km stretch of panels with colorful Olympic posters showing the city´s main landscapes.