The exclusionary rule is a legal principle that states that evidence obtained in violation of a person's constitutional rights cannot be used against them in a court of law. It prevents prosecutors from using illegally obtained evidence, such as evidence obtained through an unlawful search or seizure, to prove a defendant's guilt. The rule is intended to deter law enforcement officers from engaging in unconstitutional conduct and protect individuals' Fourth Amendment rights to be free from unreasonable searches and seizures.
