John Tinker, Mary Beth Tinker, and Christopher Echardt wore black armbands to school to protest the Vietnam War and were suspended as a result. Their family sued the Des Moines school district, arguing this violated their right to freedom of speech. The Supreme Court ultimately ruled 7-2 in favor of the students, establishing that student expression could not be limited without interfering with the work of the school or impinging on the rights of others. This case set a precedent that student rights to free speech in schools are protected unless they cause a substantial disruption.