Explore the military history of Spain in a new series, Defending Europe. Take a closer look at Moorish forts, how Cádiz resisted attack over centuries as well as the civilian shelters of Almería. Tune in to Defending Europe. Mondays at 9pm on National Geographic UK. | National Geographic UK

7K views · 80 reactions | Professor Greg Grandin introduces Bartolomé de las Casas, a Spanish clergyman who became a prominent 16th-century critic of Spain's brutal conquest of Latin America, and in doing so, laid the foundations of modern theories of social and human rights Listen to the full conversation ad-free at historyextra.com/podcast or search 'historyextra' wherever you listen to podcasts.  by Getty Images | HistoryExtra | Facebook