The piece compares the ICCPR three-part test with U.S. Supreme Court doctrine and the European Court of Human Rights approach, and it offers a practical checklist readers can use to evaluate specific measures. It avoids advocacy and focuses on primary sources and monitoring reports.
What freedom of expression means and why limits are sometimes considered
Definition under international law
freedom of expression
Freedom of expression refers to the right to hold opinions and to seek, receive, and impart information and ideas. Under international law, this right is set out in the International Covenant on Civil and Political Rights and clarified by authoritative guidance that frames how and when states may restrict speech. For readers wanting the primary text, the ICCPR is a starting point for the legal language and scope of the right International Covenant on Civil and Political Rights.
Legal protections are not absolute. States commonly argue that some limits are necessary to protect aims such as national security, public order, or the rights of others. Those aims are recognized internationally as potentially legitimate reasons for restrictions, but they trigger careful tests before limits are upheld.
When considering limits to free speech, it helps to separate three ideas: what the right covers in ordinary circumstances, the list of aims that a state may lawfully pursue when it limits speech, and the procedural and substantive safeguards that must be met before a restriction can be considered lawful. This structure explains why debates about expression are often technical and context driven.
The three-part international test: legality, legitimate aim, necessity and proportionality
Origin and purpose of the test
International law applies a three-part test to evaluate any restriction on expression: the restriction must be provided by law, pursue a legitimate aim, and be necessary and proportionate. The UN Human Rights Committee set out this framework to guide states and courts evaluating limits on speech General Comment No. 34 on Article 19.
How the parts work together in practice
The first limb, provided by law, means the restriction must be grounded in a clear legal text. Vagueness or open-ended terms in a law can make a restriction unlawful because people cannot predict what behavior is punished. Courts will look for statutory clarity and specific elements that define prohibited conduct.
The second limb requires a legitimate aim, such as protecting national security, public order, public health, or the rights of others. Listing the aim is not enough; a state must explain how the restriction advances that aim in a concrete way.
The third limb, necessity and proportionality, is a two-step inquiry. Necessity asks whether the restriction is strictly required to achieve the legitimate aim. Proportionality then balances the public interest against the harm to expression, asking whether the same aim could be achieved by a less restrictive measure. This balancing is fact specific and often decisive in judicial review.
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Consulting primary sources such as the ICCPR text and the UN Human Rights Committee guidance helps readers assess whether a law meets the three-part test.
As an example of vagueness concerns, a law criminalizing “offensive” comments without further definition may fail the clarity requirement because it grants officials broad discretion to punish speech in ways that are unpredictable. Courts and human rights bodies use this clarity test to guard against arbitrary enforcement.
Putting the limbs together, analysts examine the text of the law, the stated aim, and the evidence that the restriction is necessary. If any limb is not satisfied, the restriction is likely to be unlawful under international standards.
How the United States approaches limits on speech: Brandenburg and strict scrutiny
The Brandenburg imminent lawless action standard
The U.S. Supreme Court’s decision in Brandenburg v. Ohio remains the governing precedent for criminalizing advocacy. The decision requires intent to produce lawless action, imminence of that action, and a likelihood that the action will occur. When those elements are present, advocacy may lose protection under the First Amendment Brandenburg v. Ohio.
Brandenburg sets a high bar. Mere abstract advocacy of violence or generalized anger is typically protected speech unless the specific, imminent, and likely elements are established by the facts. That standard narrows the kinds of speech the state can criminalize without running afoul of constitutional protections.
Content-based restrictions and strict scrutiny
U.S. courts often apply strict scrutiny when a law targets speech because of its content. Strict scrutiny requires a compelling governmental interest and a narrowly tailored means to achieve it. In practice, this means many content-based restrictions are struck down unless the government shows a very strong justification and limits the restriction to what is essential.
For example, a law that bans a particular political viewpoint from public broadcasts would face intense judicial scrutiny and is unlikely to survive unless the government meets the demanding strict scrutiny test. Readers assessing U.S. restrictions should therefore check whether authorities are trying to regulate content and whether a strict scrutiny analysis applies.
Europe’s model: Article 10 ECHR and proportionality by the Strasbourg Court
Article 10 protections and permitted restrictions
The European Court of Human Rights interprets Article 10 of the European Convention on Human Rights to protect expression while allowing states to impose restrictions for specific aims such as national security, public safety, or protecting the rights of others. Any such restriction must be lawful and necessary in a democratic society.
Legal systems apply structured tests that require a lawful basis, a legitimate aim, and an assessment of necessity and proportionality, with jurisdictional differences in how those tests are applied.
The Court applies a proportionality and balancing test that looks at whether a restriction was necessary to meet a legitimate aim and whether the measure was proportionate to that aim. The Court’s emphasis is on weighing the individual right against societal needs in a manner that respects pluralism and democracy Guide on Article 10 of the European Convention on Human Rights.
Compared with the U.S. approach, the Strasbourg Court’s proportionality framework often accepts a wider range of state regulation when the restriction is justified and proportionate. That difference reflects divergent constitutional traditions and judicial styles rather than a simple hierarchy of rights.
As a neutral example, the Court has upheld certain restrictions on expression during serious threats to public order when the state showed a narrow, evidence-based justification for the measure. The decision-making in such cases focuses on whether less restrictive alternatives were available.
Common legitimate aims and how proportionality plays out in real scenarios
National security and public order
States most commonly invoke aims such as national security and public order when they seek to limit expression. These aims can be legitimate but also raise difficult proportionality questions because broad restrictions can sweep up protected speech. International authorities stress that even national security restrictions must be strictly necessary and proportionate.
Consider a public demonstration that turns violent. Authorities may impose time and place restrictions to restore order, but a blanket ban on protests in a wide area over an extended period is likely to fail a proportionality test because it goes further than necessary to restore public order.
Hate speech, incitement and protecting rights
Incitement to violence and hate speech are frequently cited as grounds for limiting expression. Human rights law recognizes these categories as potentially outside protection, but authorities must still show that restrictions are targeted and proportionate to the harm they address.
In online contexts, platforms and states often confront hateful content that many find harmful. Legal restrictions aimed at preventing incitement require evidence that the content is likely to produce imminent lawless action or comparable harm, depending on the jurisdiction. Courts will analyze whether removal or criminal sanction was the least restrictive way to address the problem.
Trends since 2020: monitoring, online controls and open questions for 2026
Observed increases in legal and administrative controls
Monitoring organizations have reported an increase in legal and administrative measures that affect expression and press freedom in many regions since 2020. These reports document a range of actions, from new laws regulating online content to administrative controls that affect media operations, and suggest a net rise in pressure on expression across several countries Freedom in the World 2024 report.
At the same time, analysts advise caution: trends vary by country and legal context. Monitoring reports are valuable for identifying patterns but do not substitute for a jurisdiction-specific legal analysis when a particular law or action is under review.
Open issues: platforms, algorithms and new national security laws
platform regulation and algorithmic moderation, and whether recent national security laws will be sustained under established necessity and proportionality tests. These questions intersect with technical and legal uncertainty about how algorithms shape visibility and reach.
Debates continue about whether platform moderation should be treated as state action in some contexts, how to ensure transparency in algorithmic decisions, and what evidence is needed to justify restrictions tied to automated content amplification. Courts and policymakers will likely face test cases that clarify these issues in coming years Democracy Report 2024.
A practical checklist for evaluating whether a government limit is lawful and justified
Step 1: check legality and clarity
Begin by locating the exact law or administrative rule that imposes the restriction. Note the text verbatim and identify which acts or statements the law targets. A clear statutory text with defined elements is the first sign that a restriction might meet the provided-by-law requirement.
Next, assess whether the law uses vague or open-ended terms that grant officials broad discretion. If it does, treat the restriction with skepticism because lack of clarity is a common ground for invalidation under international standards General Comment No. 34.
Worksheet to record law text and proportionality steps
Use this checklist when reading a new restriction
Step 2: identify aim and evidentiary basis
Identify the legitimate aim the authorities cite and whether the claim is supported by evidence. Does the law state the aim clearly, and do public filings, official statements, or independent monitoring reports provide factual support for the asserted threat or harm?
In the U.S., check whether courts might apply the Brandenburg standard and whether the restriction targets content, triggering strict scrutiny. In Europe, identify how Article 10 proportionality review would consider the measure. Context and jurisdictional standards matter for how evidence is weighed Brandenburg v. Ohio.
Step 3: test necessity and proportionality
Ask whether the restriction is strictly required to achieve the aim and whether less restrictive alternatives were available. Consider whether the restriction is time limited, geographically narrow, and accompanied by procedural safeguards such as review and appeal.
Finally, weigh the benefits to the public interest against the harm to expression. If the restriction is broader than necessary or lacks evidentiary support, it likely fails the proportionality test and may be unlawful under international or national standards Guide on Article 10 of the European Convention on Human Rights.
Common mistakes, pitfalls and a concise takeaway for readers
Typical errors when assessing restrictions
A frequent mistake is assuming that any restriction announced by the state is lawful. Legal validity depends on the three-part test and the factual record supporting necessity and proportionality. Another error is conflating private platform moderation with state action; they are distinct legal concepts with different remedies.
Readers also err by relying on slogans or advocacy statements instead of consulting the statutory text and primary sources. For neutral evaluation, rely on primary documents and monitoring reports rather than summaries that may omit crucial legal detail General Comment No. 34.
Where to find reliable primary sources
Primary sources include the text of the ICCPR, General Comment No. 34, national statutes, and court decisions such as the U.S. Supreme Court’s Brandenburg opinion. Monitoring organizations provide useful empirical context but should be paired with primary legal texts when making a legal assessment.
Takeaway: To decide whether a government limit is lawful, apply the three-part test step by step: check clarity and source of the law, confirm a legitimate aim with evidence, and evaluate necessity and proportionality against less intrusive options.
Under international law, restrictions must be provided by law, pursue a legitimate aim, and be necessary and proportionate; each limb must be satisfied for a limit to be lawful.
U.S. law applies the Brandenburg imminent lawless action test and often strict scrutiny to content-based limits, while Europe uses a proportionality balancing test under Article 10 that can allow more regulation if narrowly justified.
Consult the text of the ICCPR, the UN Human Rights Committee guidance, national statutes, and relevant court decisions for a jurisdiction-specific analysis.
For questions about a specific law or action, consult the primary texts and authoritative court decisions referenced in this article to form a jurisdiction-specific view.
References
- https://www.ohchr.org/en/instruments-mechanisms/instruments/international-covenant-civil-and-political-rights
- https://michaelcarbonara.com/issue/constitutional-rights/
- https://www2.ohchr.org/english/bodies/hrc/docs/gc34.pdf
- https://supreme.justia.com/cases/federal/us/395/444/
- https://www.echr.coe.int/Documents/Guide_Art_10_ENG.pdf
- https://freedomhouse.org/report/freedom-world/2024
- https://michaelcarbonara.com/contact/
- https://michaelcarbonara.com/news/
- https://michaelcarbonara.com/issue/educational-freedom/
- https://v-dem.net/en/news/democracy_report_2024/

