There is a painting that I think about often. The Madonna del Parto, a masterpiece painted by Piero della Francesca in about 1460, is housed in a dedicated museum in the Tuscan town of Monterchi. It depicts a heavily pregnant Virgin Mary flanked by two angels. To local women, this painting is considered a protector of fertility and the lives of pregnant women during birth. During the second world war, local women surrounded two men whom they had mistaken for a Nazi intent on stealing it. In 1954, they led a protest against its proposed movement to Florence for an...