Background: a few words, endless interpretation
Ratified in 1791, the First Amendment says "Congress shall make no law… abridging the freedom of speech, or of the press." Short sentence. Courts have spent 230+ years filling in what it means.
And there's one rule you need right at the start: it binds the government (the "state action" doctrine). Your employer disciplining you, or a platform deleting your post, generally isn't a First Amendment issue at all.
The cases: from "fire in a theatre" to the KKK
- Citation
- Schenck v. United States, 249 U.S. 47 (1919)
- What happened
- Anti-draft leaflets during WWI; conviction upheld
- The famous line
- Justice Holmes: free speech wouldn't protect "falsely shouting fire in a theatre" + the "clear and present danger" test
The replacement was Brandenburg v. Ohio (395 U.S. 444, 1969). In a case about a KKK leader's rally speech, the Court held that even advocating violence is protected unless it's directed to inciting imminent lawless action and likely to produce it.
Law gets hard because the gap between "awful speech" and "speech you can punish" is way bigger than most people think. Measuring that gap is literally what lawyers do. The U.S. Supreme Court kept widening it, case after case, until America ended up with the broadest free speech protection on the planet. The landmark rulings show how.
The rulings that drew the line
- New York Times Co. v. Sullivan (376 U.S. 254, 1964): a public official suing for defamation has to prove "actual malice", meaning the speaker knew it was false or recklessly ignored the truth. It stopped officials from using small errors in a full-page civil-rights appeal to wipe out a newspaper.
- Tinker v. Des Moines (393 U.S. 503, 1969): students wearing black armbands against the Vietnam War. Students don't "shed their constitutional rights… at the schoolhouse gate."
- Brandenburg (1969): the imminent-lawless-action test above.
- Moody v. NetChoice (2024, No. 22-277): Florida and Texas laws regulating social media. The Court signaled that platforms' curation of content is itself expressive activity and sent the cases back down.
Commentary in the Constitution Annotated; read Sullivan on Justia.
Korea comparison: punished for telling the truth?
| Question | United States | South Korea |
|---|---|---|
| Source | First Amendment | Constitution Art. 21 (limited by Art. 37(2)) |
| Defamation by stating true facts | Essentially not punishable | Can be a crime under Criminal Act Art. 307(1); upheld by the Constitutional Court in 2021 |
| Internet real-name rule | Anonymous speech protected | Struck down by the Constitutional Court in 2012 |
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Criticism and debate
- Hate speech: critics say protection this broad leaves minorities exposed. Most of Europe criminalizes hate speech.
- Platform power: when giant private platforms basically run the public square, does the state action doctrine still make sense?
- Rethinking Sullivan: some Justices (Thomas, for one) have written that the actual-malice rule deserves another look.
At bottom, free speech law is about how far you trust the idea that more speech beats bad speech. Once you see that countries hold that belief at different strengths, it's obvious why the same case ends differently in different places. Here's how to organize it for a paper.
Study notes
- Comparative frame: the U.S. "categorical" approach (only narrow unprotected categories) vs Korea's "balancing" approach (proportionality). The balancing side is covered in proportionality and levels of scrutiny.
- Korean remedy: in Korea, speech restrictions are often challenged through a constitutional complaint. Powers of the Constitutional Court (Structure of Government): Requirements and Effects of Constitutional Review of Statutes, Impeachment, Party Dissolution, Competence Disputes and Constitutional Complaints explains its requirements and effects clearly.
References and official sources
- Constitution Annotated, First Amendment. congress.gov
- Schenck v. United States, 249 U.S. 47 (1919).
- Brandenburg v. Ohio, 395 U.S. 444 (1969). Justia
- New York Times Co. v. Sullivan, 376 U.S. 254 (1964). Justia
- Tinker v. Des Moines Independent Community School District, 393 U.S. 503 (1969).
- Moody v. NetChoice, LLC, No. 22-277 (U.S. July 1, 2024).