The difference between the US and the rest of the world is that the US has the First Amendment, which it upholds. So, for example, in the US "hate speech" is not banned, and while inciting violence is banned, it must be literal incitement:
https://en.wikipedia.org/wiki/Hate_speech_in_the_United_Stat...
This is important, because freedom of speech was supposedly allowed behind the Iron Curtain as well, as long as it wasn't "going against the socialist order" or "promoting fascism" (with capitalism or social democracy being just light fascism). Various countries found ways to pay lip service to human rights, while being authoritarian.
You can say a lot of awful shit, but you really can't openly oppose the State with any real threat of power. I mean, I wouldn't really call the US admitting to assassinating Malcom X, MLK, among others, the pinnacle of free speech... all theses people did was speak out against injustices that they observed... and that's just one incident. This happens everyday.