TOPSHOT - Activists and relatives of missing people march to demand the Mexican government answers on the whereabouts of their loved one, as part of the commemoration of Mothers' Day in Mexico City on May 10, 2019. - Mexico, a country ravaged by the violence of drug trafficking cartels, recorded 33,513 missing persons until 2017, according to official figures. One of the most emblematic cases was the disappearance and presumed massacre of 43 students in Guerrero state in 2014. (Photo by ALFREDO ESTRELLA / AFP)