It seems many very vocal people on the internet are essentially pushing an idea that the most sensitive people should be defining what those boundaries are for everyone and the list of things people can be outraged could change at any time, and ignorance of these boundaries is not sufficient excuse.
https://www.theverge.com/2018/10/10/17961806/google-leaked-r...
The difference between America and Germany — very broadly speaking — is that America goes for the local maximum (free speech trumps everything) and Germany goes for a global maximum.
Social networks don't control the police and jails. They have always had the right - though they neglected it because they are lazy and delusional - to moderate content on their own servers.
It's so clear to me that "one size fits all" social networks will go away. They are inherently dysfunctional. Putting everyone from terrorists to toddlers on the same forums was never a good idea.