Margot Friedländer, a Holocaust survivor who, after decades in New York City, returned in 2010 to Berlin, where she found new purpose as a champion of Holocaust remembrance, died on May 9 in Berlin. She was 103.

Mrs. Friedländer and her husband arrived in New York in 1946, vowing never to return to the country that had murdered their families. But after her husband’s death, Mrs. Friedländer decided to go back to see what was left. She had signed up for a memoir-writing class, and had begun to tell her story, which was becoming a memoir. A filmmaker heard about the memoir, and he encouraged her to return to Berlin, where she found her voice. She traveled to schools and talked to young people about how she had survived before her capture and her time at Theresienstadt in Bohemia.