Not that I disagree with you - but "can't yell fire in a crowded room" is slightly misconstrued. As those aren't the original words from the U.S. Supreme Court case. [0]
Additionally, the idea of 'clear and present danger' has been modified within the past 100 years since the said court case. The Supreme court since then has stated:
"The government cannot punish inflammatory speech unless that speech is 'directed to inciting or producing imminent lawless action and is likely to incite or produce such action'". Said definition has changed and depends upon situations, where some action is imminent or "at some ambiguous future date".[1]
Additionally, the idea of 'clear and present danger' has been modified within the past 100 years since the said court case. The Supreme court since then has stated: "The government cannot punish inflammatory speech unless that speech is 'directed to inciting or producing imminent lawless action and is likely to incite or produce such action'". Said definition has changed and depends upon situations, where some action is imminent or "at some ambiguous future date".[1]
[0] https://en.wikipedia.org/wiki/Shouting_fire_in_a_crowded_the... [1] https://en.wikipedia.org/wiki/Imminent_lawless_action