Power to the people.
As to "many cases where online communities document or facilitate crimes elsewhere", why criminalise the speech if the action is already criminalised?
That leaves only "Campaigns to harass individuals and groups". Why wouldn't moderation tools as powerful as the ones employed by Twitter's own moderators deal with that?
[1] https://mtsu.edu/first-amendment/article/970/incitement-to-i...
These are global platforms with global membership, simply stating that “if it is free speech in America it should be allowed” isn’t a workable concept.
If I had a tool that could (at least attempt to) filter out anti-semitism or Holocaust denial, then Germany could have that set to "on" to comply with the law. I'm all for democracies deciding what laws they want.
[1] https://www.reuters.com/article/us-germany-hatecrime-idUSKBN...