Watching movies about emperor of a reign or a very famous president (
example “The Iron Lady” or “The Queen”), I always think that the director of
the movie (or serie) is trying to show to the people that the main character,
the leader of the country always has a quite fragile, they (the directors) try
to show the “Part B” of this characters. In the official history we can see
majestics kings, imposing emperors and strong presidents, but in the movie we
see those people in a more human view.
For example, the movie of the life of the ex Prime Minister of the United Kingdom, Margaret Thatcher (played by Meryl Streep), try to explain her term as a mad, schizophrenic and forgetful old lady, for my opinion that's a very exaggerated point of view (even knowing that she really was very polemic person).
In the movie of 2006, "The Queen", the british actress Helen Mirren plays the role of The Queen Elizabeth II, after the death of Princess Diana, the UK's monarch and her family decide that for the best, they should remain hidden behind the closed doors of Balmoral Castle at Scotland. The people don't undertand her decision and request for the Queen's statement.
In this film we can see the Queen even as a very relaxed person, pressed by his huge responsibility, in a scene of the movie she tries to escape from his life walking on her garden with her dogs and talking about the life with the Prime Minister Tony Blair.
In my point of view, the directors of these movies are trying attract the heed of the people by a new way, or at least different for the people. The viewer loves this kind of new feelings, they don't want to see the official history, they don't want to see how majestic are the kings, they don't want to see presidents saving the world against the alien menace. The people loves when the president is suffering, laughing, crying, their chilhood, their loves, they want to see if behind those cold hearts are feelings, pieces of humanity.