Guenter Lewy is Professor Emeritus of Political Science at the University of Massachusetts. His books include The Catholic Church and Nazi Germany, The Nazi Persecution of the Gypsies, and Harmful and Undesirable: Book Censorship in Nazi Germany.
[M]akes an important contribution to our understanding of the Holocaust....Perpetrators is organized clearly and logically....[T]he author makes a valuable contribution by providing detail on the perpetrators and by offering his views on what motivated the killers. --Mark Monesclaros, H-War