Tens of thousands of wild horses still roam the west, about 750 of them in Colorado. They're here now largely because federal law requires the Bureau of Land Management to protect them. But some advocates say the BLM is failing to do that, and they point to what's going on in the Piceance Basin, southwest of Meeker. There, officials are looking to eliminate a population of horses known as the West Douglas herd. The agency says the animals don't do well there and that theyâ€™re difficult to manage. Wild horse advocates say the BLM's move is illegal, and they're suing to stop it. Producer Adam Burke takes us to a roundup in the Piceance Basin. And Ryan Warner talks to Fran Ackley, head of the BLM's wild horse program in Colorado, and Ginger Kathrens, executive director of the Cloud Foundation, based in Colorado Springs.