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