What is the legal principle served by the exclusionary rule?

The exclusionary rule is a fundamental legal principle that aims to protect individuals from illegal governmental actions, specifically regarding the collection of evidence. It serves to exclude any evidence obtained through illegal searches and seizures, as this aligns with the Fourth Amendment rights in many legal systems, including the U.S. Constitution. By disallowing such evidence in court, the rule not only upholds the rights of individuals against unlawful government intrusion but also acts as a deterrent against law enforcement from conducting improper searches.

This principle is vital in maintaining the integrity of the judicial system, ensuring that the law is applied fairly and consistently. It also reinforces the expectation that law enforcement must operate within legal parameters and follow proper procedures when gathering evidence.