Without prejudice...
“Repeat a lie often enough and it becomes the truth”
Joseph Goebbels
The big lie, to describe the use of a lie so colossal that no one would believe that someone "could have the impudence to distort the truth so infamously."
Mein Kampf
“Four legs good, two legs bad.” “The creatures outside looked from pig to man, and from man to pig, and from pig to man again; but already it was impossible to say which was which.” “All animals are equal, but some animals are more equal than others.” "All animals are equal but some animals are more equal than others."
Animal Farm
Many Dictators, Communist, Socialist and other even Democratic Governments use these methods to control the narrative and thoughts of their proletarians.