The Fourth Amendment protects your right to privacy. California search and seizure laws protect you from unreasonable police intrusion into your home, vehicles, person and other property.The Court finds that the Government's request runs afoul of the Fourth and Fifth Amendments, and the search warrant application must be DENIED. The search warrant allows them to search the third-floor apartment of a suspect. The police officers go up to the third floor, enter, and then start searching. The Fourth Amendment prohibits only "unreasonable searches and seizures. " The key word is "unreasonable. He sued the officers involved and the City of Oakland, alleging that they violated his First Amendment rights and that his arrest was without probable cause. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. 456 U.S. 798 for warrantless car searches.) Current California cases.