Explin the court case mapp v. ohio

Mapp v. was a landmark case in criminal procedure, in which the United States Supreme Court decided that evidence obtained in violation of the Fourth Amendment, which protects against "unreasonable searches and seizures," may not be used in state law criminal prosecutions in state courts,

Mapp vs. Ohio established that evidence discovered in violation of the Fourth Amendment cannot be used in a state prosecution ... The Supreme Court ruled that the Fourth Amendment rights were incorporated into the Fourteenth Amendment, which guarantees due process of law at both the state and federal levels.