MEXICO-CRIME-VIOLENCE-SCHOOLS-SECURITY

TO GO WITH AFP STORY by Laurent Thomet Students listen to teacher Amalio Hernandez Dimas during class at Secundaria 100 school at El Coloso neighbourhood in Acapulco, Mexico, during a security operation to protect teachers and students from gangs demanding extortion payments, on February 19, 2015. The army arrived here and more than 100 other schools in the Pacific resort's gang-ridden periphery three weeks ago to counter a growing rash of murders, kidnappings and extortion threats targeting teachers. The deployment of 1,000 troops to the schools and their surrounding neighborhoods was the only way to convince frightened teachers to return to the classrooms, ending a strike over the violence that had left 31,000 students homebound since November. AFP PHOTO / PEDRO PARDO (Photo credit should read Pedro PARDO/AFP via Getty Images)