"Free speech, defined as the law and culture that exists in the U.S., is better in the U.S. than any other country"

You do see the flawed reasoning, don't you?

Responding to the sibling re: censoring pornography. The 1st amendment prevents the government from interfering with the free exchange of ideas (among other things). We generally believe that letting the government regulate this kind of thing is a dangerous slippery slope.

Obscenity laws are constitutional in the US. Obscene speech is not protected by the 1st Amendment:

https://en.wikipedia.org/wiki/Miller_v._California

There are myriads of other exceptions to 1st Amendment protections (including, even if people often don't think of it that way, intellectual property rights):

https://en.wikipedia.org/wiki/United_States_free_speech_exce...

The whole idea that "Free speech is protected in the US but not in Europe" is just an (libertarian?) meme with no basis in fact.

The Netherlands. And in what way is US freedom of speech with puritan censoring of anything sex related better than a system in which we prohibit something like holocaust denial? (something that actually hurts people, as opposed to someone's nipples)