Activist lie on the street pretending to [Getty Images]

Activist lie on the street pretending to be dead during a flash mob of the "Breathing Shouldn't Be Something For Heroes" campaign in Mexico City, on May 6, 2012. Social organizations in thirteen cities of the country participated to call the attention of the Federal Commission for Protection against Health Risks (COFEPRIS) on problems caused by pollution, specially smoke from cars. According to a statement which uses statistics from the World Health Organization (WHO), around 14,700 people die each year due to air pollution in Mexico. AFP PHOTO/ Yuri CORTEZ (Photo credit should read YURI CORTEZ/AFP/GettyImages)

AFP YURI CORTEZ