I think the US 2nd Amendment is a great thing. People everywhere should have that absolute degree of freedom. That's certainly not the same thing as "free nuclear weapons."

We are, however, rightly intolerant of hate speech, especially speech against a segment of the population.

The problem we've seen with this, is that rather tame bog-standard Republican positions in the US are being tarred as "hate speech" by bad actors on the Far Left. (Accompanied by Far Leftist mobs chasing bog-standard Republicans in the street and beating them up. There's video of this to be found on YouTube.) I'm fine with direct incitement being illegal. That's pretty much the same thing as prohibiting explicit threats of physical violence. But there should be a wide zone around any kind of political opinion which isn't direct incitement. Otherwise, without objective standards, everything just devolves into namecalling, trying to get everyone else de-platformed.

In 2019, every enforcement mechanism needs to be vetted with the question: Can this be exploited? Because in 2019, you can rest assured that some bad actor will exploit it.

Almost every country has laws on the books like this, including the USA.

There is no such thing as "Hate Speech" in the US. However, we do have laws against things like direct incitement.