Final answer:
The police practice of interrogating individuals without notifying them of their right to counsel and their protection against self-incrimination violates the Fifth Amendment.
Step-by-step explanation:
The police practice of interrogating individuals without notifying them of their right to counsel and their protection against self-incrimination violates the Fifth Amendment. According to the case of Miranda v. Arizona, police must advise criminal suspects of their rights to remain silent and to consult with a lawyer.
If a suspect states that they wish to remain silent, the police interrogation must stop. This is to ensure that individuals are aware of their rights and are not coerced into giving self-incriminating statements.