Schenck v. United States (1919)

Freedom of speech can be limited during wartime. The government does not violate the First Amendment when it restricts expressions that “would create a clear and present danger that they will bring about the substantive evils that Congress has a right to prevent.”

The Court considered a similar issue of free speech in times of crisis in Gitlow v. New York (1925).

The case touched on constitutional principles including limits on rights and civic values including responsibility and moderation.