Final answer:
Justice Oliver Wendell Holmes stated that crying 'Fire!' in a crowded theater would not be protected speech, in his opinion for the unanimous decision in Schenck v. United States, setting a precedent for limitations on the First Amendment based on a 'clear and present danger' test.
Step-by-step explanation:
The Supreme Court Justice who stated "No one has the right to cry, 'Fire!' in a crowded theater" when settling the Schenck v. United States case was Oliver Wendell Holmes. This quote was part of his opinion on the limits of the First Amendment in relation to freedom of speech. The case involved Charles Schenck, who mailed circulars encouraging draftees to resist the draft during World War I. Holmes expressed that during wartime, certain expressions that would be permissible in peacetime pose a clear and present danger and, as such, do not receive protection under the First Amendment.
The unanimous decision in Schenck v. United States essentially established a test to determine when speech could be limited: free speech does not protect actions that create a substantial risk of causing significant harm that the government has the authority to prevent. This ruling has had a profound impact on the legal interpretation of the First Amendment and the definition of protected speech, especially in situations of national security or public safety.