Verbally confronting the police is a right all Americans have under the First Amendment.
Unreasonable Searches And Seizures. Even in the law enforcement context, the State may interfere with an individual's Fourth Amendment interests with less than probable cause and without a warrant if the intrusion is only minimal and is justified by law enforcement purposes. An essential purpose of a warrant requirement is to protect privacy interests by assuring citizens subject to a search or seizure that such intrusions are not the random or arbitrary acts of government agents.
Except in certain narrowly limited cases, the Court repeatedly has stated its 'insist[ence] upon probable cause as a minimum requirement for a reasonable search permitted by the Constitution.
Only when law enforcement faces an exigent circumstance is the warrant requirement exempted.
The Fourth Amendment provides no protection for what 'a person knowingly exposes to the public'. Like a man's facial characteristics, or handwriting, or his voice is repeatedly produced for others to hear. No person can have a reasonable expectation that others will not know the sound of his voice, any more than he can reasonably expect that his face will be a mystery to the world.
'No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a Grand Jury, except in cases arising in the land or naval forces, or in the Militia, when in actual service in time of War or public danger; nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb, nor shall be compelled in any criminal case to be a witness against himself, nor be deprived of life, liberty, or property, without due process of law; nor shall private property be taken for public use without just compensation.'
"In all criminal prosecutions, the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation; to be confronted with the witnesses against him; to have compulsory process for obtaining witnesses in his favor, and to have the Assistance of Counsel for his defence." U.S. Const. amend. VI. The Sixth Amendment guarantees a criminal defendant the fundamental right to be clearly informed of the nature and course of the charges in order to permit adequate preparation of a defense.
The Sixth Amendment, which is applicable to the states through the Due Process Clause of the Fourteenth Amendment, guarantees a criminal defendant a fundamental right to be clearly informed of the nature and cause of the charges against him.
A murder trial is not one of the "games that people play." The due process clause does not serve as an innocent bystander. It acts as the umpire and referee all rolled into one and calls "foul" where rules of fair play are broken.