You can't. Either speech is free or it's not. There are reasonable restrictions - literally inciting violence or things done to intentionally cause harm ("Fire!" in a theater, etc).
For information, the only thing you can do is make it classified, which is hard to do when it's a private company doing the innovating.
Can you give references?
In my experience of living in Germany, freedom of expression is welcomed as long as it's the right kind of expression.
At least since NetzDG was passed I'm not sure it's quite that simple.
Google[0] says this about the NetzDG:
"The Network Enforcement Law (NetzDG) requires social networks with more than 2 million registered users in Germany to exercise a local take down of “obviously illegal” content [..] To qualify for a removal under NetzDG, content needs to fall under one of the 22 criminal statutes in the German criminal code to which NetzDG refers."
Politico[1] said this "Titanic, a German satirical magazine, was similarly barred after parodying anti-Muslim comments on its own Twitter account"
[0] https://transparencyreport.google.com/netzdg/youtube [1] https://www.politico.eu/article/germany-hate-speech-netzdg-f...
This is a good example of something that is, without a doubt, unconstitutional to ban in the US.