A mural showing Brazilian footballer Neymar and Angenor de Oliveira, known as Cartola, a Brazilian singer and composer (1908-1980) at the Terreirao do Samba (Samba Land), in Rio de Janeiro. Photograph: Marcelo Sayao/EPA

In a huge shopping mall just off São Paulo’s main drag 18-year old delivery boy Clayton Neves is spending some of his lunch hour checking out Brazi(...)