A judge in Argentina has ruled the state was responsible for the massacre of more than 400 Indigenous people a century ago, calling it a “crime against humanity.” In 1924, Argentine police and settlers opened fire on Qom and Moqoit Indigenous communities as they protested dreadful working and living conditions on cotton plantations — conditions the workers said amounted to slavery. The ruling does not offer victims’ relatives and descendants financial compensation; instead, it will require schools in Argentina to teach the history of the massacre and will fund efforts to find victims’ remains.