Sunday on PBS News Weekend, we look at the challenges faced by Native American communities whose tribal lands stretch across modern borders. Then, how a cancer drug shortage is forcing doctors to change how they treat patients. We also hear the story of an openly gay man who was a driving force of the civil rights movement. Plus, a gay son recounts his dad's advice on how to live his life. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders