Final answer:
The conduct of police during investigations must adhere to Constitutional rights and local ordinances but not necessarily to public opinion or non-binding international treaties. The rule of law emphasizes fairness, due process, and accountability, with the U.S. Constitution being the supreme legal authority.
Step-by-step explanation:
The laws, rules, and regulations governing police conduct during investigations need not always align with public opinion. While it is crucial for law enforcement to respect Constitutional rights and adhere to local government ordinances, public opinion can often be variable and not necessarily in line with legal principles. Additionally, international standards such as those recommended by the UN may not be legally binding, especially if they conflict with national sovereignty or local laws.
It is also important to recognize that the rule of law is a fundamental concept that requires the laws to be clear, publicized, stable, and applied evenly. This includes protection against unreasonable searches and seizures, guaranteeing due process, and ensuring that government and private actors are accountable under the law. In the United States, different states may have varying laws, but all are bound by the U.S. Constitution, which is the supreme law of the land.