Why did falsely shouting fire in the crowded theater?

Falsely shouting "fire" in a crowded theater is considered a classic example of speech that can lead to panic and harm, illustrating the limitations of free speech. This scenario, famously referenced in Justice Oliver WenDELL Holmes Jr.'s opinion in the 1919 Supreme Court case Schenck v. United States, highlights that speech that incites immediate danger or chaos is not protected under the First Amendment. The act can cause injury and potentially lead to a stampede, demonstrating the balance between free expression and public safety.