What does the "exclusionary rule" aim to protect?

The exclusionary rule primarily aims to protect defendants' constitutional rights related to evidence by ensuring that evidence obtained in violation of fundamental rights cannot be used against them in court. This rule is fundamentally rooted in the belief that the protection of constitutional rights, such as those found in the Fourth Amendment concerning unreasonable searches and seizures, is essential to maintaining a fair legal system. By excluding evidence obtained through illegal means, the rule seeks to deter law enforcement from conducting unlawful searches and seizures, thus upholding the integrity of the judicial process and reinforcing respect for individual rights.

This focus on safeguarding the rights of defendants distinguishes the exclusionary rule from concerns regarding witness testimony, character evidence, or the efficiency of the court system, which are addressed through other legal principles. By prioritizing constitutional protections, the exclusionary rule establishes a crucial check on governmental power and strives to create a more equitable legal environment.