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[$$] With Personal Connection to Crash, Ralph Nader Takes on Boeing

, a 24-year-old public-health researcher and the daughter of Mr. Nader’s niece, died along with 156 others when Ethiopian Airlines Flight 302 went down. Now Mr. Nader, the high-profile consumer crusader in the twilight of his career, is determined to translate his family’s anguish into action. “They lulled us into complacency,” Mr. Nader said.