Full Idea
Oliver Wendell Holmes (in 1919) noted that freedom of speech does not include the right to shout 'Fire!' in a crowded theatre.
Gist of Idea
Free speech does not include the right to shout 'Fire!' in a crowded theatre
Source
Tuckness,A/Wolf,C (This is Political Philosophy [2017], 1 'Conflict')
A Reaction
The point here is that such irresponsible free speech does not even require legislation, and there is probably already some law under which the perpetrator could be prosecuted.
Book Reference
Tuckness,A / Wolf,C: 'This is Political Philosophy' [Wiley Blackwell 2017], p.22