A grey minivan rattled through São Paulo’s hilly suburbs, loaded with spray cans, paint rollers, buckets and a ladder as five street artists drove to the Atibainha river, rap lyrics blaring from their speakers.
On the sweltering afternoon of 26 February, they painted colourful protest murals on the legs of a bridge that crosses one of São Paulo’s most important water sources, nestled in the Serra da Cantareira mountain range.