A few months ago I was given a book to read as a part of my legal assistance job. The book was about the importance of opening statements in trials. Hollywood seems to think trials are won in closings, but this books premise was that trials are won in opening statements.
The theory behind the premise is that people usually make up their minds quickly no matter how objective they claim to be, and that once a person has made up his/her mind concerning guilt or non-guilt it becomes very difficult to change their minds.
This was preamble as a way to explain why the general public seems to be so gullible on certain issues and why control of the main stream media is so important to dupe the general public into starting wars and voting against their economic interests. When the truth comes out it doesn't matter for the general population their minds are made up, don't confuse them with facts.
Children grow up in religous schools being told that evolution is a hoax and the world was created in six, twenty-four hour days. It becomes very hard to change their minds on the subject after that. The media declares climate change to be a hoax and the rubes eat it up no matter how much evidence to the contrary.
Thought control doesn't take brute force, just quick lies told as truth. How else do you explain the demogogues that have our governments by the throat.