Why is Tinker decision considered such on important first amendment case?

Tinker v. Des Moines Independent Community School District affirmed students’ rights to free speech in public schools and became a regularly cited Supreme Court precedent.

Explanation:

It not only showed a compromise with individual liberty, but it also established the right to free expression as more valuable than the needs of government institutions, such as schools. Furthermore, the Court's ruling confirmed symbolic speech as protected under the First Amendment.

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.