https://www.history.com/news/mothers-plaza-de-mayo-disappeared-children-dirty-war-argentina

https://www.bbc.co.uk/news/world-latin-america-43318136

Of course, the BBC article above omits to mention the awkward fact that our friends in successive United States governments were backing / funding the “Operation Condor” military coups and the killings of innocent people and their children / grandchildren.