The killing of a popular Zimbabwean lion named Cecil by a Minnesota dentist on a hunting trip has reignited the debate over big-game trophy hunting. Cecil the lion was reportedly lured outside the protected area of Hwange National Park, and was hunted by bow-and-arrow and rifle, then left skinned and headless outside the park. The dentist, who paid $50,000 to hunt the lion, says he relied on local guides and thought the hunt was legal. But the killing has sparked a global backlash against him. We discuss trophy hunting, and why some hunters and conservation groups say it helps with protecting animals in the long run.