Mexico: Mothers search for missing children

There are more than 30,000 people missing in Mexico as a result of the battle between drug cartels and the government.

The state of Veracruz on the eastern coast has suffered particularly from years of violence.

And now, relatives have discovered the biggest set of mass graves in the country.

Al Jazeera's John Holman reports from Veracruz.

Latin America, Mexico, Human Rights