Bill Of Rights:
The right of 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 to be seized.
In 1957 police demanded to search Dolree Mapps home for a person who was wanted fore questioning, she refused to let them in without a search warrant. After she did not let them in they brought in back up and, were waving a paper that was supposedly there search warrant so they entered the her house without telling her if it was a warrant. They did not find anything but arrested Dolree Maps for having photography pictures that were obscure.
In 1985 there was a family who was getting evicted for evidence. They did not let any police officer in their house. They also had no search warrant to get in their house. They called for backup and went in to her house to check everything and there was nothing there. When she went to court the judge found out that the police officers had no warrant so she won the case and kept her house. See police officers are suppose to have warrants to enter their house and check for stuff.