March marks 1968 Mexico killings

Thousands of Mexicans marched across their nation's capital Thursday to demand justice for victims of a 1968 massacre of students by government troops -- contemporary Mexico's most traumatic atrocity and one that remains unresolved.

Survivors of that bloody night 40 years ago and Mexicans who had not been born then joined forces, chanting "Dos de octubre! No se olvide!" (Oct. 2! Don't forget!) as they converged on the downtown Zocalo plaza.