All searches and seizures under the Fourth Amendment must be reasonable and no excessive force shall be used. The Fourth Amendment protects against unreasonable searches and seizures.It requires a warrant, based on probable cause, for searches. Debates over the scope of unreasonable searches and seizures sparked the American Revolution as we'll learn in a moment. "Under the Fourth and Fourteenth Amendments, an arresting officer may, without a warrant search a person validly arrested. The Fourth Amendment, however, is not a guarantee against all searches and seizures, but only those that are deemed unreasonable under the law. The Fifth Amendment protects against self-incrimination. This session explored how the Court has ruled on Fourth Amendment issues related to the bodyeverything from fingerprinting to strip searches. II explores those results. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated.