Civil rights attorney and law professor JACK GREENBERG Civil rights attorney and law professor JACK GREENBERG. He was just out of law school--a white Jewish man from the Bronx when he joined the fledgling NAACP Legal Defense and Educational Fund (LDF). GREENBERG took over the helm of the LDF from his mentor Thurgood Marshall when Marshall was appointed to the Federal Court of Appeals. During GREENBERG'S tenure there, the LDF litigated some of the watershed cases of the civil rights struggle. He has just published a memoir of his 35 years at the LDF. It's called "Crusaders in the Courts: How a Dedicated Band of Lawyers Fought for the Civil Rights Revolution" (Basic Books).