A person on a motorcycle passes in front of a wall displaying graffiti in Sao Paulo, Brazil, on Wednesday, Jan. 18, 2017. One of Joao Dorias first feats as the new mayor of Brazils largest city was to scrub the graffiti from Sao Paulos iconic cable-stayed bridge that runs across its sewage-choked river. The problem is that the local graffiti artists take pride in putting their cryptic scrawl, known as pichacao in Portuguese, in hard-to-reach places. Photographer: Patricia Monteiro/Bloomberg via Getty Images