That's my core question, and I am honestly curious about it: Aside from whether someone is intending to incite action (although I think a lot of these accounts

That's my core question, and I am honestly curious about it: Aside from whether someone is intending to incite action (although I think a lot of these accounts are), at what point are they obligated to limit their free speech because someone else will more-or-less-reliably be incited by it? Is there any US jurisprudence around that question already?