Search and seizure refers to the legal process where law enforcement officers search a person's property and take evidence related to a crime. This process is governed by the Fourth Amendment of the U.S. Constitution, which protects individuals from unreasonable searches and requires law enforcement to obtain a warrant based on probable cause. A warrant is a document issued by a judge that allows police to search specific locations for specific items. In some cases, officers can conduct searches without a warrant if there are exigent circumstances, such as the risk of evidence being destroyed or the need to prevent harm.