Gwen Ifill, the longtime PBS news anchor who had served as a co-host of PBS’s NewsHour and as moderator of “Washington Week,” has died after a battle with cancer, PBS has confirmed. She was 61. “It is with extremely heavy hearts that we must share that our dear friend and beloved colleague Gwen Ifill passed away this afternoon following several months of cancer treatment,” PBS NewsHour said in a statement on Monday. “She was surrounded by loving family and many friends whom we ask that you keep in your thoughts and prayers.” "I am very sad to tell you that...