539 BC - King Cyrus The Great of Persia marches into the city of Babylon, releasing the Jews from almost 70 years of exile and making the first Human Rights Declaration.
1945 - A massive number of people, headed by CGT and Evita, gather in the Plaza de Mayo in Argentina to demand Juan Peron's release. This is known to the Peronists as the Día de la lealtad (day of loyalty). It's considered the birthday of Peronism.