Mexico’s disappeared: 40,000 missing

Violence between organised criminal gangs and the government in Mexico are being blamed for the disappearance of about 40,000 people.

More than a thousand graves have already been discovered by individuals hoping to find clues as to what happened to their disappeared loved ones.

Mexico’s new government has pledged $20m to investigate what happened to those who went missing.

Al Jazeera’s John Holman reports from the capital, Mexico City.