It is usual in films to use Disclaimer in it to
reduce the possibility of legal action for libel from any person who believes that he or she has been libeled via their portrayal in the work (whether portrayed under their real name or a different name).
A sample disclaimer looks like:
All characters appearing in this work are fictitious. Any resemblance to real persons, living or dead, is purely coincidental.
The wording of this disclaimer differs from jurisdiction to jurisdiction, and from country to country, as does its legal effectiveness.
Now my question is if everybody knows that it is made to get saved from any legal action from the person, the movie indicated to, why do people allow to use it?
Actually, I think the disclaimer is an intelligent lie. The whole plot is intentional. Sometimes we have also seen in movies that the president of different countries(specially USA) are shaded falsely.
So if different countries thinks they would sue them, can producers be saved from international law?
Again if a renowned person thinks a movie falsely showed him, can he not sue him because of the disclaimer?
If there is any example, please add them. It would be informative.