The correct answer is option C ("Speech aimed to potentially create danger could be banned").
In the Schenck v. United States case of 1919, an unanimous decision by the Supreme Court concluded that the distribution of pamphlets aimed to convince young men of not joining the Army, would be considered a criminal offense as it threatened to obstruct the draft. Holmes' crucial opinion stated that any expression which presented "clear and present danger" shouldn't be protected by First Amendment rights and should be punishable.
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