The Massachusetts Supreme Judicial Court has struck down the state's ban on carrying switchblades, ruling that the prohibition violates the Second Amendment. This decision aligns with a landmark U.S. Supreme Court ruling that requires modern gun restrictions to be consistent with the nation's history and tradition, extending this principle to other weapons. The court's decision vacates the 1957 law that prohibited spring-release pocketknives, citing the Second Amendment right to keep and bear arms.