Mexican President Andrés Manuel López Obrador has formally apologized for a 1911 massacre in which over 300 Chinese people were killed by Mexican revolutionary troops in the northern city of Torreón. Among the victims were children and agricultural workers. The massacre took place during the Mexican Revolution of 1910 to 1920 and was part of a wave of anti-Chinese violence in the region. There are no monuments acknowledging the massacre, and it’s been largely excluded from most accounts of Mexican history. This is López Obrador at a ceremony Monday, days after the massacre’s May 13 anniversary.

President Andrés Manuel López Obrador: “Mexico apologizes to the families of the victims of this authoritarian repression that was committed by movements, organizations and governments of our country. … The Mexican state will not allow ever again racism, discrimination and xenophobia.”