Last Friday, while Prosecutor Mosby was announcing her poorly supported tsunami of charges against the six police officers involved in arresting and transporting the ill-fated Freddie Gray, Mosby also remarked that Gray’s knife–claimed by police to be the probable cause for his arrest–was in fact lawful under Maryland law.As reported by the New York Times:Ms. Mosby faulted the police conduct at every turn. The officers who arrested him “failed to establish probable cause for Mr. Gray’s arrest, as no crime had been committed,” she said, describing the arrest as illegal. Officers accused him of possession of a switchblade, but Ms....