Accusing her of gathering together (accusing her of gathering)
Answer: His experience as a Holocaust survivor.
Explanation:
Elie Wiesel is a survivor of Auschwitz who wrote about his experience in a short memoir titled Night. He was awarded the Nobel Peace Prize because of his chronicles about the Holocaust and his fervent work on recovering those kinds of stories. The ‘kingdom of night’ is a reference to the awful events of the Holocaust.