As described in Shoah, upper class Jews were transported in luxury trains and played cards with each other on the way to the death camp.
When they arrived on the platform a camp trustee whispered to one of the new arrivals about the true nature of the camp.
The new arrival snitched to a guard that the camp trustee was "out to cause trouble and anxiety".
The guards hauled the trustee away from the platform out of sight of the new arrivals and immediately shot him.
http://en.wikipedia.org/wiki/Shoah_%28film%29
Best regards,
I read of a similar incident where the camp inmate (trustee seems far too inappropriate) was thrown into the burning ovens alive.