Final answer:
Appearing in a line-up does not violate the Fifth Amendment rights, which protect against self-incrimination. The right to remain silent and right to counsel must be communicated through Miranda warnings during police interrogations, as established by Miranda v. Arizona, for the Fifth Amendment protections to apply.
Step-by-step explanation:
Appearing in a line-up does not, in itself, violate a suspect's Fifth Amendment rights. The Fifth Amendment primarily protects individuals from self-incrimination, meaning they have the right not to testify against themselves or provide evidence that could lead to their own criminal prosecution. This is popularly known as taking the fifth. However, when it comes to police interrogation practices, the Fifth Amendment is implicated under certain circumstances. Specifically, if the police conduct an interrogation without notifying the individual of their right to counsel and their protection against self-incrimination, it can constitute a violation of the Fifth Amendment.
The landmark case of Miranda v. Arizona established that suspects must be informed of their rights, including the right to remain silent and the right to an attorney, before being interrogated while in police custody. A failure to provide these Miranda warnings can lead to any subsequent confession being deemed involuntary and therefore inadmissible in court. There are, however, scenarios where the Miranda rights do not apply, such as when the suspect is not in custody or is free to leave. Also, the right to remain silent must be expressly invoked by the suspect; otherwise, silence alone may not afford protection against self-incrimination, as established in Salinas v. Texas.