Linda Colley’s excellent book Captives, which shows the reaction of the English and American publics to a slave trade of which they were victims rather than perpetrators. How many know that perhaps 1.5 million Europeans and Americans were enslaved in Islamic North Africa between 1530 and 1780? We dimly recall that Miguel de Cervantes was briefly in the galleys. But what of the people of the town of Baltimore in Ireland, all carried off by “corsair” raiders in a single night?