United States v. Fish, ___ F.3d ___, 2014 WL 715785 (1st Cir. Feb. 26, 2014) (Massachusetts conviction for assault and battery with a dangerous weapon, under M.G.L. ch. 265, 15A, did not categorically constitute a crime of violence, under 18 U.S.C. 16(a), because the minimum conduct punishable under this statute does not have as an element the use of violent force, but instead covers even the slightest touching with a dangerous weapon).