Final answer:
The Tinker v. Des Moines case was important for students' freedom of speech in public schools during the 1960s.
Step-by-step explanation:
The Tinker v. Des Moines case was an important case for students, especially during the 1960s, because it addressed the issue of students' freedom of speech in public schools. In this case, a group of students wore black armbands to protest the Vietnam War, and the school district responded by suspending them. The case eventually reached the Supreme Court, which ruled that the students' right to free speech was protected, unless their conduct materially and substantially interfered with the operation of the school.