Certain speech is criminal like inciting violence.
Therefore I would say that there is no such thing as completely free speech, even in the US which has the First Amendment. There are always some restrictions on speech.
With the example of pro-suicide content, you could argue “making pro-suicide speech illegal would start a slippery slope”. But on the other hand, if you have people committing suicide because they were encouraged to do so, then maybe it makes sense to make pro-suicide speech illegal. And it doesn’t necessarily need to be a slippery slope. Other forms of speech don’t have to be banned.
Therefore I would say that there is no such thing as completely free speech, even in the US which has the First Amendment. There are always some restrictions on speech.
With the example of pro-suicide content, you could argue “making pro-suicide speech illegal would start a slippery slope”. But on the other hand, if you have people committing suicide because they were encouraged to do so, then maybe it makes sense to make pro-suicide speech illegal. And it doesn’t necessarily need to be a slippery slope. Other forms of speech don’t have to be banned.