Glossary

Viewpoint discrimination

Government regulation of speech that targets the perspective expressed, treated as an especially serious First Amendment violation.

Also called: viewpoint-based restriction

Viewpoint discrimination occurs when government permits or penalizes speech on a topic depending on the perspective or ideology of the speaker. It is a subset of content-based regulation, which is presumed unconstitutional, but courts treat it as the most blatant form.

Allowing speeches about a subject in a public school auditorium but excluding those that take a particular side, for example, is viewpoint discrimination, while excluding the subject entirely might be only a subject-matter limit. In Rosenberger v. University of Virginia (1995), the Supreme Court held that a public university could not refuse to fund a student religious magazine while funding other student publications. Matal v. Tam (2017) and Iancu v. Brunetti (2019) struck down bans on trademarks that were disparaging or immoral.

The doctrine applies to government, not private companies. Disputes over deplatforming and social-media moderation involve whether government officials may pressure platforms, and whether states may bar platforms from moderating by viewpoint, as addressed in Moody v. NetChoice (2024). It is a central idea for conservatives who argue that universities and agencies discriminate against their views, and for advocates on all sides who invoke public forum doctrine protections.

Last reviewed November 8, 2026

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Related terms

Public forum doctrine The First Amendment framework that sets how much government may limit speech on public streets, parks and other government property. Compelled speech The First Amendment principle that the government generally cannot force people to express messages they disagree with. Prior restraint Government action that blocks speech or publication before it occurs, treated by courts as the most disfavored form of censorship. Brandenburg test The Supreme Court standard protecting advocacy of illegal action unless it is meant and likely to cause imminent lawless acts. Deplatforming The removal or suspension of a person or group from a social-media or online service, often for violating rules on speech.