Nazis: Ultimate Evil

When we think of the most evil Nazis, the first that comes to mind is Adolf Hitler. But Hitler couldn't have done it alone. The atrocities of the Nazi party required a vast network of evil; from the intellectual elite who legitimized Hitler's ideas to the public, to the desk-jockeys who carried out his orders with ruthless efficiency, to the low-level thugs who delivered those orders face-to-face and blow-by-blow to their intended victims. Who were these people? What did they do? How did they become this way? And which ones--in some people's minds--are considered as evil--or maybe even more evil--than Hitler himself?