It's not about Hollywood! It's about freedom of speech.
It's a very important principle, especially in the US that speech is protected. Not just by the first amendment, but as one of the fundamental principles on which your country is based.
You do not silence yourself because the government tells you, or because a criminal tells you and certainly not because some foreign unelected dictatorship tells you. If that happens then you should not just speak, but shout!
Yes, torture is a problem. Would we know about it if people didn't tell us about it?
Do you actually care about the human rights violations in North Korea? You seem to. Raise awareness! Tell the world! You can, because your freedom of speech is protected. If North Korea threatens you people will fight and some will even die to protect your right to speak out against it.