Tens of thousands marched in Mexico City Thursday to mark the anniversary of the Tlatelolco student massacre. On October 2, 1968, just days before Mexico City hosted the Olympics, government forces opened fire on students in the Plaza de las Tres Culturas, killing up to 350 people. To date, no one has been tried. The anniversary comes as more than 40 students remain missing in the Mexican state of Guerrero following an alleged police ambush last weekend. Witnesses say both police and unknown gunmen attacked buses carrying students from a rural teacher’s college and players from a soccer club, killing six people, including three students and a 15-year-old boy. Enrique Espinosa, who survived the 1968 massacre, said the recent killings are part of a legacy of impunity in Mexico.

Enrique Espinosa: “It seems that we are returning to the same things that happened in those years back in the ’60s: repression, political prisoners, persecutions and injustices, a whole lot of injustices.”