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At least 50 people from Mexico, Guatemala and Honduras have been found dead in the back of a truck outside the Texas city of San Antonio. Mexico has blamed a people smuggling crisis at the border with the US. The illegal movement of people can be highly lucrative, but incredibly dangerous. So what makes people attempt the journey? We'll hear reaction from across the continent. The tragedy comes amid plummeting costs across North and South America, and protests in the Peruvian capital. The country's former finance minister tells us about a growing emergency in the country. (Picture: Emergency crews carry another victim of the regular violence and death at the US-Mexico border. Credit: Guillermo Arias/Getty Images).