Guerrero State, Mexico. 15th Nov, 2014. A portrait of missing student Jorge Alvarez Nava painted with red paint is displayed in an altar in Insurgentes, Mexico City during protests demanding justice for the disappearance of 43 students from Ayotzinapa school in the state of Guerrero. 43 teachers college students disappeared over a month ago, when investigators say police detained the students and handed them over to a drug gang. Picture taken November 16, 2014. Credit: Chico Sanchez/Alamy Live News

- Image ID: EAJA1M
Guerrero State, Mexico. 15th Nov, 2014. A portrait of missing student Jorge Alvarez Nava painted with red paint is displayed in an altar in Insurgentes, Mexico City during protests demanding justice for the disappearance of 43 students from Ayotzinapa school in the state of Guerrero. 43 teachers college students disappeared over a month ago, when investigators say police detained the students and handed them over to a drug gang. Picture taken November 16, 2014. Credit: Chico Sanchez/Alamy Live News
Chico Sanchez / Alamy Stock Photo
Image ID: EAJA1M
A portrait of missing student Jorge Alvarez Nava painted with red paint is displayed in an altar in Insurgentes, Mexico City during protests demanding justice for the disappearance of 43 students from Ayotzinapa school in the state of Guerrero. 43 teachers college students disappeared over a month ago, when investigators say police detained the students and handed them over to a drug gang. Picture taken November 16, 2014.
Location: Insurgentes, Mexico City, Mexico