My personal opinion, this movie is a part of government distrust propaganda.
You may not understand this, but this may be a very dangerous piece of foreign propaganda.
Apart from the fact, that the whole movie is just 6 actors (1 family of 4, a president, and a serial killer).
This movie teaches you nothing!
It shows pain and loss, and what is its conclusion? That all the problems may be solved, how...? What is its conclusion?
No! The ending is misleading, it would never work this way.
Your family is very important! Certainly it is more important than to say any bad words to a dying polititian.
It is never only a single person responsible even in a most dictatorial regimes!
And in the end, It would work better, if they'd let the person to publicly apologize, and they could use his knowledge more carefully, to fix all this, instead of just...
This particular country is not isolated, and most of its power is from the fact it is united and it unites other countries.
I don't like to critique this absolute mess they called a cinema, which in my opinion must have ratings below 1 out of 10.
I would like to say you this:
America is United!
USA will stay United!
USA will unite its own people!
USA will unite the rest of the world!
Belive in yourself!
Be careful, and check thoroughly who has invested & scripted this cinema. It may turn out, it was paid by some of USA rivals via off-shore companies.