Final answer:
The Sixth Amendment protection in question in Carey v. Musladin was the right to a fair trial.
Step-by-step explanation:
The Sixth Amendment protection that was in question in Carey v. Musladin was the right to a fair trial. This amendment guarantees that the accused has the right to a public trial by an impartial jury. The family wearing buttons with images of the victim to the trial could have potentially influenced the jury's decision, which could have violated the defendant's right to a fair trial.
Learn more about Sixth Amendment protection in relation to a fair trial