👉 The conviction weapon is a legal concept referring to the use of evidence obtained through unconstitutional means, such as illegal searches or coerced confessions, to secure a defendant's conviction. This practice undermines the fairness and integrity of the criminal justice system, as it violates the constitutional rights of the accused, particularly the Fourth Amendment's protection against unreasonable searches and seizures. When evidence is obtained illegally, it can be deemed inadmissible in court, potentially leading to the acquittal of the defendant or a reduced sentence. The conviction weapon serves as a critical check on law enforcement powers, ensuring that convictions are based on lawful and justifiable evidence.