Mexico's missing students: More mass protests due

Mass protests are expected in Mexico for a group of 43 students who disappeared in September.

The students, all trainee teachers, went missing after attending a protest in Iguala, Guerrero Stat.

The Mexican authorities say local police handed the students to a drug gang who then murdered them.

The abduction has galvanised opposition to rampant political corruption and violence, as the BBC's Wyre Davies reports from Mexico City.