Original sentence: Jean Anyon (July 16, 1941 – September 7, 2013), was an American critical thinker and researcher in education, a professor in the Doctoral Program in Urban Education at The Graduate Center of The City University of New York, and a civil rights and social activist
Edited sentence: Jean Anyon (July 16, 1941 – September 7, 2013), was a leading American critical thinker and researcher in education, a professor in the Doctoral Program in Urban Education at The Graduate Center of The City University of New York, and a lifelong civil rights and social activist