[jane's two cents]
No offense, but you can't tell me that the guards working in those camps [who keep in mind, were NOT high political leaders at all] were good people. The doctors who experimented on prisoners, they weren't political figures, but they still participated. Death camps were kept secret to the allies, however, the towns and cities around the camps knew about the camps due to the smells and noises they heard. Once the allies had liberated the camps, several mayors of several towns surrounding camps commited suicide and left in their suicicde notes something to the effect of that they knew the camps were there and they simply could not live with the guilt of knowing and not saying anything anymore.
[/jane's two cents]