A massive mural project in Mexico City is transforming some of the poorest neighborhoods

Local authorities in Mexico City are sponsoring what they call "the largest mural project in the world," an initiative to recover public spaces where abandonment has led to safety concerns. The World's Tibisay Zea takes us on a tour to Iztapalapa, the most populous borough in Mexico City, where close to 11,000 murals have been painted by local artists in recent years.