Tinker held that public school students have First Amendment protection for peaceful political expression at school. The Court ruled that Des Moines officials could not suspend students for wearing black armbands to oppose the Vietnam War without evidence that the protest would materially disrupt schoolwork or interfere with other students' rights.
The case began when Des Moines students planned to wear black armbands to protest the Vietnam War and mourn the dead. School principals adopted a rule against armbands shortly before the protest. Mary Beth Tinker, John Tinker, and Christopher Eckhardt wore them anyway and were suspended until they agreed to return without the armbands. Their families sued, arguing that the school district had punished protected political expression.
Does the First Amendment protect public school students who wear black armbands at school as a peaceful protest when the expression does not materially disrupt school activities?
Public school students have First Amendment rights at school, and officials may restrict student expression only when facts reasonably support a forecast that the expression will materially and substantially disrupt schoolwork or invade the rights of others. The record did not justify suspending students for wearing black armbands to oppose the Vietnam War.
How the justices lined up in this decision.
Tinker became the baseline rule for public school student speech. Students can use it when schools punish political expression, protest symbols, or other personal speech. Schools still may act against speech that causes or is reasonably forecast to cause substantial disruption, invades the rights of others, or falls under later student-speech limits, but disagreement with a viewpoint is not enough.
7-2. Justice Abe Fortas wrote the majority opinion. Justice Potter Stewart and Justice Byron R. White concurred separately. Justice Hugo L. Black and Justice John M. Harlan II dissented.