There is tension between the elite who privately own productive resources and the multitudes who are made dependent who, as Karl Marx noted, must sell their lives in order to live. Within this relationship of power, the constitution protects the power of the powerful.
The strategy of using thought control emerged out of the governments propaganda campaign during WW1. In the 1920’s Edward Bernays, who served on the government propaganda commission during the war wrote, “the conscious and intelligent manipulation of the organized habits and opinions of the masses is an important element in democracy.”
During the same period, Walter Lippman devised the term “manufacture of consent” which he called an “essential art in the practice of democracy.”