RIO DE JANEIRO, BRAZIL - At first glance, Belgrano Avenue in the Buenos Aires town of Banfield is nothing special. Still, there is a peculiar behavior among its passers-by: they walk with more or less haste, they go in and out of the stores, but all of them, at some point or another, raise their eyes to the sky and smile.
The reason for this spontaneous happiness is two huge hyper-realistic style murals that dialogue with each other. The largest of them, 65 meters high, shows a little girl on her back, standing on her toes to build a . . .