Final answer:
The Fourth Amendment does not protect what a person knowingly exposes to the public, as there is no expectation of privacy. The Fifth Amendment protects an individual from self-incrimination during interrogations, making the police practice of not notifying individuals of their rights a violation of this amendment.
Step-by-step explanation:
What a person knowingly exposes to the public, even in his own house or office, is not the subject of Fourth Amendment protection. This amendment ensures the right to privacy against unreasonable searches and seizures by the government, but this protection is not absolute. Items or activities exposed to the view of outsiders are not protected by the Fourth Amendment because there is no expectation of privacy. An example is if someone leaves their curtains open and something illegal is in plain view, law enforcement may use that as evidence without a warrant.
Regarding the Fifth Amendment, it includes protections against self-incrimination, ensuring that an individual cannot be compelled to testify against themselves during a legal proceeding. The police practice of interrogating individuals without notifying them of their right to counsel and protection against self-incrimination indeed violates this amendment. This right is crucial during an interrogation phase, as established by the landmark Miranda v. Arizona case.
In the specific scenario where a known drug dealer is arrested and interrogated without being informed of their rights, his confession may be deemed inadmissible in court based on the protections offered by the Fifth Amendment, because he was not notified of his Miranda rights.