In the case of Schenck v. United States the Supreme Court ruled that

The Court upheld Charles Schenck’s conviction for distributing leaflets that urged resistance to the World War I draft. It said speech could be restricted when, in its context, it created a “clear and present danger.” Thus, speech that could create danger could be banned; the Court did not declare the Espionage Act unconstitutional or say that the First Amendment had no limits.

AI-written and checked against the verified answer.