<Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (June 2012) (Learn how and when to remove this template message) </Td> </Tr> <P> "Shouting fire in a crowded theater" is a popular metaphor for speech or actions made for the principal purpose of creating unnecessary panic . The phrase is a paraphrasing of Oliver Wendell Holmes, Jr.'s opinion in the United States Supreme Court case Schenck v. United States in 1919, which held that the defendant's speech in opposition to the draft during World War I was not protected free speech under the First Amendment of the United States Constitution . </P>

Where did the saying fight fire with fire come from