In Fahrenheit 451 why is beattys death the climax of the novel?

Beatty is the antagonist of the book and a "big brother" character to Montag, Captain Beatty demonstrates vast literary knowledge in his arguments against the presence of books in society. Beatty often antagonistically lectures Montag, trying to prevent him from succumbing to the appeal of books. Towards the end of the novel, Montag kills Beatty with the firethrower that has burned thousands of books and hopes. Rather than fighting Montag, Beatty simply accepts his death. Montag later realizes that the fire chief wanted to die, demonstrating an extreme dissatisfaction with his life. Beatty's self-destruction is very much a symbol of the sick world he represents that needs to be cleansed.