I recently ran across an interesting expression, "desk murderers." Desk murderers were those who may not have personally killed anyone but they gave the orders, signed the papers, etc. all from the comfort of their offices. Every totalitarian system needs its desk murderers in order to function. Groupthink makes this possible. Groupthink enabled the killers to suspend all judgement and just focus on being efficient little monsters. Of course our schools and popular culture never teach about the dangers of groupthink.