In the case of Arizona v. Evans, the Supreme Court addressed the issue of whether evidence obtained from an unlawful arrest should be excluded from trial. The case involved a police officer who arrested a suspect based on an outstanding warrant that was later found to be invalid. The question was whether the evidence collected during this arrest could still be used in court. The Court ultimately ruled that the evidence was admissible, emphasizing the importance of the officer's good faith belief in the validity of the warrant. This decision highlighted the balance between protecting individual rights and allowing law enforcement to effectively perform their duties.