How did Beatty say that censorship began?

In Ray Bradbury's "Fahrenheit 451," Captain Beatty explains that censorship began gradually, as society prioritized comfort and conformity over individuality and critical thought. He describes how people became increasingly disinterested in complex ideas and literature, leading to the suppression of dissenting views. As a result, books were burned to eliminate conflicting opinions and maintain societal harmony, ultimately resulting in a culture that shunned deep reflection in favor of superficial entertainment.