Book excerpt: In some of the more celebrated of these actions, he has publicly confronted such notorious anti-Semites as David Duke and Louis Farrakhan, climbed over a fence and led supporters in a sit-in to protest the presence of a Carmelite convent at the Auschwitz death camp, and carried a coffin to the official residence of New York City Mayor David Dinkins to decry his allowing police to stand back while Jews were being viciously attacked during the 1991 Crown Heights riots."