The Mothers of the Plaza de Mayo were upset with the Argentine military government because their children were among the tens of thousands who went missing during the military dictatorship. Their activism aimed to seek justice and answers concerning the disappearances of their loved ones. This collective action highlighted significant human rights violations in Argentina during this period. ;
The Mothers of the Plaza de Mayo were upset with the Argentine military government because their children were missing as a result of state terrorism during the dictatorship. They became activists, seeking answers and justice for their lost loved ones while highlighting human rights violations. The correct answer is option A: their children were missing.
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