916 N.E.2d 762 COMMONWEALTH v. AMI H. PERRY. Supreme Judicial Court of Massachusetts. November 18, 2009. Dangerous Weapon. Practice, Criminal, Required finding. Words, “Blackjack.” Rescript Opinions. After investigating a report of an assault, police detectives effectuated a warrantless arrest of the defendant, Ami H. Perry. He subsequently was charged with assault and battery by means […]