feat_faab22ef-6d0e-4a38-9eb6-a3129a107e14-1-e1633136525645

A memorial was built at the site of the tragedy. In front of it, a man narrates the events of Oct. 2, 1968, to a couple of visitors. (Julio Guzmán/Zenger)

A memorial was built at the site of the tragedy. In front of it, a man narrates the events of Oct. 2, 1968, to a couple of visitors. (Julio Guzmán/Zenger)

A memorial was built at the site of the tragedy. In front of it, a man narrates the events of Oct. 2, 1968, to a couple of visitors. (Julio Guzmán/Zenger)