Which case established the standard for limiting free speech as the "clear and present danger"?

• A. Clear and present danger
• B. Imminent lawless action
• C. Real harm principle
• D. Prior restraint

Answer: (A)

The main concept tested is how the First Amendment allows limits on speech when there’s a real risk it will cause harm. The standard of “clear and present danger” was established by the early 20th-century case Schenck v. United States. In that decision, the Court held that speech presenting a clear and present danger of producing illegal acts—like obstructing the draft during World War I—can be restricted because it threatens a significant governmental interest. This created the initial framework for judging when speech could be limited: if the speech poses a real, immediate danger that the government has a right to prevent, it may not be protected.

Over time, this standard was refined to a tougher test—imminent lawless action—found in Brandenburg v. Ohio, which protects more speech but allows restriction when the speech is intended and likely to incite imminent illegal action. So the earliest established standard was the "clear and present danger" doctrine.

Related concepts listed aren’t the foundational standard here: the later incitement test (imminent lawless action) comes after; the “real harm principle” isn’t the recognized First Amendment standard in this context; and prior restraint is about blocking publication before it happens, not the particular standard for limiting speech.