What was the impact of Mapp v Ohio?

The impact of Mapp v. Ohio was significant in that it established the principle that evidence obtained in violation of the Fourth Amendment, which protects against unreasonable searches and seizures, cannot be used in state courts. This landmark decision extended the exclusionary rule, previously applied only to federal cases, to state courts.

This means that if law enforcement officials obtain evidence without a proper search warrant or probable cause, that evidence is deemed inadmissible in court. The ruling reinforced the importance of constitutional protections and ensured that individuals' rights against unlawful searches were upheld at both federal and state levels.

By ruling in this manner, the Court aimed to deter police misconduct by eliminating the incentive to conduct unlawful searches, thus seeking to uphold the integrity of the judicial process.