Freedom of speech: the right to express information, ideas, and opinions free of government restrictions based on content and subject only to reasonable limitations.
This ends when someone eles’s life is infringed apon.
Tinker v. Des Moines
-three public school pupils in Des Moines, Iowa, were suspended from school for wearing black armbands to protest the Government’s policy in Vietnam
1. In wearing armbands, the petitioners were quiet and passive. They were not disruptive and did not impinge upon the rights of others. In these circumstances, their conduct was within the protection of the Free Speech Clause of the First Amendment and the Due Process Clause of the Fourteenth. Pp. 505-506.
2. First Amendment rights are available to teachers and students, subject to application in light of the special characteristics of the school environment. Pp. 506-507.
3. A prohibition against expression of opinion, without any evidence that the rule is necessary to avoid substantial interference with school discipline or the rights of others, is not permissible under the First and Fourteenth Amendments.
Our problem lies in the area where students in the exercise of First Amendment rights collide with the rules of the school authorities. The problem posed by the present case does not relate to regulation of the length of skirts or the type of clothing,  to hair style, or deportment. Cf. Ferrell v. Dallas Independent School District, 392 F.2d 697 (1968); Pugsley v. Sellmeyer, 158 Ark. 247, 250 S. W. 538 (1923). It does not concern aggressive, disruptive action or even group demonstrations. Our problem involves direct, primary First Amendment rights akin to “pure speech.”
The school officials banned and sought to punish petitioners for a silent, passive expression of opinion, unaccompanied by any disorder or disturbance on the part of petitioners. There is here no evidence whatever of petitioners’ interference, actual or nascent, with the schools’ work or of.