Black Sails

This:

In late August, a black-sailed ship appeared in the harbor carrying a 16-year-old visionary, a girl who had sailed from the far north across a great sea. A mass of city-dwellers and travelers, enthralled by her prophecies, gathered to welcome her. She had come to speak to the nations of Earth, to castigate us for our vanities and warn us of coming catastrophe. “There were four generations there cheering and chanting that they loved her,” the writer Dean Kissick observed. “When she came ashore, it felt messianic.”

Black Sails