“When the Supreme Court begins weighing the constitutionality of assault-weapons bans next month, the justices will be guided by the court’s own precedent: a landmark ruling that such restrictions are allowed only if a firearm is both ‘dangerous and unusual,'” the New York Times reports.“For nearly two decades, judges across the country have invoked this language to strike down gun-control laws. It is a pivotal legal test.”“It is also based on a misquote.”