I believe that one of the greatest ideas in the movie, is that it starts by frightening you, it makes you fear John, in such way that you don't even want to see him. And then when the movie continues it is revealed that John is just a loving human being, who wants to be loved like everybody else, and you suddenly look at him and has a kind of sympathy for him.
This is a VERY VERY VERY strong idea in my opinion BECAUSE the movie shows us that we are not better than anyone else. Even though we think that the people who've seen John as a horrible deformed monster were horrible, we were thinking the same way in the beginning of the movie. Because the movie introduced John to us that way. This teaches us that unfortunately we are not objective, we don't really check things out before we judge them. We base our opinions on what others tell us, and not on what's right.
This is a VERY VERY VERY strong idea in my opinion BECAUSE the movie shows us that we are not better than anyone else. Even though we think that the people who've seen John as a horrible deformed monster were horrible, we were thinking the same way in the beginning of the movie. Because the movie introduced John to us that way. This teaches us that unfortunately we are not objective, we don't really check things out before we judge them. We base our opinions on what others tell us, and not on what's right.