What is the author's tone in Berlin Diary; the Journal of a Foreign Correspondent, 1934-1941 by William L. Shirer?

Berlin Diary is written in the first-person point of view of the author, William L. Shirer. Shirer writes in a subjective tone presenting the facts as he found them and freely expressing his own opinions and views. He is not a supporter of the Nazis or Hitler's actions and he makes this point clear to the reader. Shirer does not like the censorship that he is subject to and he makes this fact known. When the censorship becomes too severe, he quits and leaves Europe, feeling that he can no longer be effective in his job as a radio broadcaster.