The Constitution, through the Fourth Amendment, protects people from unreasonable searches and seizures by the government. 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's protection from self-incrimination allows citizens to not have to testify in court if they feel that it might incriminate themselves. In modern times, this protection has been most famously represented in the 1966 Supreme Court ruling Miranda v. Arizona.
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things ...