So, _Schenck_ has largely been overturned on a number of occasions, but the following (untested) likely still holds as punishable (but not forbidden against through ante-hoc regulations):
* _Falsely_ shouting fire
* in a crowded theater
* for the purpose of imminently inciting harm to others
We started at submission about Google employees waving around a paper tiger petition, we proceeded to top ranked reminder to everyone of DARPA and how military funding is the One True Way, then on to crypto export controls, rolling onward into a gun control debate, conflating semi-automatic weapons with rocket launchers, and finally into yes, the meaning behind "fire in a crowded theater."
The comment section on HN is now second only to the comments from Yahoo news stories. Keep up the great work everyone.
To be fair, the thing that is most oft intended by the idiom is "look, if the cherished first amendment can be restricted, then so too can the second amendment".
It isn't a law, and where I say "might" in my follow-up, it should not be confused with "is" or "will". There are no laws that forbid you from exclaiming fire in a theater. People think there are because Oliver Wendell Holmes made a clumsy aside while explaining a bad decision that has since been overturned.
Either way, the real point to this is that a punishment for negligent use of one's rights (e.g., falsely shouting fire in a crowded theater for the purposes of causing harm to others) is still not remotely the same as banning free exercise of that right, or converting that right into a privilege through licensure, as is being suggested as rational compromises for the second amendment, predicated on a clumsy and wrong-headed interpretation on the first.
We might all prefer it if you had to obtain a license to speak in a theater, on the grounds that yelling fire in one might prove too dangerous a responsibility for average citizens, but I think most of us would agree that it would violate the first amendment quite heinously. The only way to imagine that equivalent restrictions are less heinous when applied to the second amendment is if one takes the second amendment less seriously as a "real" right, or to imagine that such restrictions are common on the first amendment. It isn't less real a right, and such restrictions are not common on the first, despite misuse of the aforementioned idiom.
* _Falsely_ shouting fire
* in a crowded theater
* for the purpose of imminently inciting harm to others