Answer:
Justice Fortas and Justice Black had two different opinions about the Tinker v. Des Moines Independent Community School District case.
Step-by-step explanation:
On the one hand, Justice Fortas claimed that the fact that 5 students of Iowa decided to wear a black armband to show their protests against the Vietnam War was an example of freedom of speech. Although the the students only showed their opinion, they did not participate in a real disruption.
On the other hand, Justice Black stated that the First Amendment does not protect the students from giving their opinion at any time. He reasoned that the solely use of armbands was a fatal distraction for students, teachers and school officials which prevent them from performing their duties properly.