[Cboldt]

There are many exceptions to free speech. Yelling "fire" isn't the only one. You aluded to defamation.

Meanwhile, check 18 USC 2385 - Advocating overthrow of Government, but that triggers on advocating violence.

Seditious libel has a history in the US, with the Zenger trial being a significant reference point.

[SaveFerris]

[Seditious libel]

Ah, George Liar Stephanopolous (sic?), Rachel Maddow, et al.