What is totalitarian propaganda and how can it control
enlightened people

Totalitarian Propaganda can controlled well educated people by conveying the regimes beliefs, almost forcing it down their subjects throats.

So when it works it usually shows an "Evil" or "Enemy" of the state, and obviously without proper methods of evaluating the truth decent people will believe it for example look at the DPRK or Iran.

rudy is the nazi ideal, unfortunately for the nazis his ideal comes in the form of jesse the complete opposite of those who embrace the idea of white supremacy. over the course of the novel, rudy learns that he wants nothing to do with the hitler youth, and because of this his parents are forced to make a bargain; rudy's father is forced into the military, so that his son can remain home.   both liesel and hans influence that young man that rudy becomes. following han's example, rudy puts aside his own hunger to risk his life so that the jewish prisoners might have bread to eat.