"These advertisements address different types of issues, but they’re all about giving a voice to the voiceless. Most of us love animals, and yet we remain ignorant of or apathetic towards the abuse of domestic or circus animals or the extinction, poaching and over-harvesting of wild populations."
On May 10, Brazilian artist Paulo Ito posted this mural on the doors of a schoolhouse in São Paulo’s Pompeia district. Less than a week later, it has become an international sensation, drawing huge attention on Facebook. It has also taken off in Brazil—a post on the popular Facebook page TV Revolta has been shared and liked more than 40,000 times.