> After all, you can't shout fire in a crowded theatre because it would harm the public good. That's not true; there's no general "harming the public good" exc

> After all, you can't shout fire in a crowded theatre because it would harm the public good. That's not true; there's no general "harming the public good" exception to the First Amendment. There are exceptions for lying (i.e., making false statements with knowledge that they are false (or with reckless disgard of whether they are false) and intent to deceive), and that's the actual reason why it is unprotected to falsely shout "fire" in a crowded theater.