The first half seemed to slowly build up the story, and it needed the second half to be more dramatic. It was. You realise just what the books represent, and what kind of society this is. The society controls literature to stifle information but mainly free thought and imagination. Censorship isn't for your own good, but just a tool to shape and control thoughts and emotions. Drugged up people fit in, and anyone thirsting for mental stimulation via books is a threat. People are happy with a low expectation of happiness and awareness, because of the media propaganda and social norms. This movie focuses on a small part of a bigger world, and it was fine. Made today, this movie would be CGI overkill and miss the low key everyday feel.
Some old social sci-fi movies seems more relevant today. This is one. Today political correctness is the pressure to become one mindless being, against common sense and critical thinking, and history is often skewed to fit with the times. Drug use is rampant and self assurance and family come from a screen, getting likes (simular to the tv in this movie.)