Scholar Who Escaped Nazis Dies After a Push by a Subway Rider in a Rush

Rabbi Joseph Potasnik speaks during a memorial service for Kurt Salzinger, a scholar in the field of behavioral psychology, at Riverside Memorial Chapel in Manhattan, Nov. 11, 2018. The Hofstra professor escaped Austria as the Nazis took control. Eighty years later, he died after someone knocked him down on a subway platform. (Yana Paskova/The New York Times)